{"title":"Smoke, Heat \u0026 Carbon Monoxide Alarms","description":"\u003cp\u003e\u003cstrong\u003eSmoke, heat and carbon monoxide alarms\u003c\/strong\u003e from Honeywell Home and Wisualarm, covering stand-alone, radio-interlinked and mains-powered models for UK homes, rental properties and new builds. Each alarm detects something different, so a complete setup uses the right type in the right room.\u003c\/p\u003e\n\n\u003ch2\u003eWhich alarm goes where?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eOptical smoke alarms\u003c\/strong\u003e suit hallways, landings and living areas. \u003cstrong\u003eHeat alarms\u003c\/strong\u003e suit kitchens and garages, where steam and cooking fumes would trigger a smoke alarm. \u003cstrong\u003eCarbon monoxide alarms\u003c\/strong\u003e belong in any room with a gas, oil or solid fuel appliance, and in bedrooms. Smoke alarms cannot detect CO and CO alarms cannot detect smoke, so you need both. Place CO alarms typically 1–3 m from the appliance, following the manufacturer's instructions.\u003c\/p\u003e\n\n\u003ch2\u003eBattery, mains and interconnected options\u003c\/h2\u003e\n\u003cp\u003eSealed 10-year battery alarms need no wiring and no battery changes, which makes them a good fit for retrofits and rental properties. Wisualarm mains alarms are available in Grade D1 (sealed lithium backup) and Grade D2 (replaceable 9V backup) and should be fitted by a qualified electrician. To link alarms so that one triggers all, choose radio-interlinked models such as the Honeywell Home R200 N1 series or Wisualarm WisuLink wireless units. The Wisualarm interconnect module and Wi-Fi and Ethernet gateway extend these networks.\u003c\/p\u003e\n\n\u003ch2\u003eRegulations and responsibilities\u003c\/h2\u003e\n\u003cp\u003eIn England, Building Regulations require a CO alarm when a new or replacement fixed combustion appliance is installed (excluding gas cookers), and private landlords must provide smoke alarms on every storey and CO alarms in rooms with a fixed combustion appliance. Scotland has its own interlinked-alarm requirements. Always check the rules that apply to your property.\u003c\/p\u003e\n\n\u003cp\u003eFitting a new boiler? See our \u003ca href=\"\/collections\/gas-boilers\"\u003egas boilers\u003c\/a\u003e and \u003ca href=\"\/collections\/boiler-flues-accessories\"\u003eboiler flues and accessories\u003c\/a\u003e, and browse more from \u003ca href=\"\/collections\/honeywell\"\u003eHoneywell\u003c\/a\u003e and \u003ca href=\"\/collections\/wisualarm\"\u003eWisualarm\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"wisualarm-carbon-monoxide-alarm-10-year-sealed-battery-lcd-display","title":"Wisualarm Carbon Monoxide Alarm | 10-Year Sealed Battery | LCD Display","description":"\u003c!--\n  SUGGESTED PRODUCT TITLE (SEO):\n  Wisualarm DHI-HY-GC20D Carbon Monoxide Alarm | 10-Year Sealed Battery | LCD Display | EN 50291-1:2018 | TÜV \u0026 CE Certified\n  MPN: DHI-HY-GC20D\n  Brand: Wisualarm (by Dahua)\n  Category: Fire \u0026 Safety \u003e Carbon Monoxide Alarms \u003e Standalone CO Alarms\n  Note: This is the STANDALONE (non-wireless) variant. For the wireless interconnected version compatible with the Wisulink RF mesh system, see DHI-HY-GC20D-R8.\n  UK Importer: Dahua Technology UK Ltd., 3rd Floor, Quantum House, 60 Norden Road, Maidenhead, SL6 4AY\n--\u003e\n\u003cstyle\u003e\n  .wu-desc * { box-sizing: border-box; }\n  .wu-desc { font-family: inherit; color: inherit; line-height: 1.7; font-size: 16px; }\n  .wu-desc p, .wu-desc li, .wu-desc td, .wu-desc th { font-size: 16px !important; line-height: 1.7; }\n  .wu-desc h2 { font-size: 22px !important; font-weight: 700; color: #1a1a2e; border-bottom: 2px solid #c0392b; padding-bottom: 6px; margin: 2rem 0 1rem; line-height: 1.3; }\n  .wu-desc h3 { font-size: 17px !important; font-weight: 700; color: #1a1a2e; margin: 1.2rem 0 0.4rem; line-height: 1.4; }\n  .wu-desc p { margin: 0 0 1rem; }\n  .wu-desc ul { padding-left: 1.5rem; margin: 0 0 1rem; }\n  .wu-desc ul li { margin-bottom: 0.5rem; }\n\n  .wu-intro-box { background: #fef5f5; border-left: 4px solid #c0392b; padding: 1.1rem 1.4rem; border-radius: 0 6px 6px 0; margin-bottom: 1.5rem; }\n  .wu-intro-box p { margin: 0 !important; }\n\n  .wu-badge { display: inline-block; background: #c0392b; color: #fff; font-size: 13px !important; font-weight: 700; border-radius: 4px; padding: 2px 10px; margin-right: 6px; margin-bottom: 4px; vertical-align: middle; }\n  .wu-badge.dark { background: #1a1a2e; }\n  .wu-badge.grey { background: #555; }\n  .wu-badge.green { background: #1a7a3c; }\n  .wu-badge.orange { background: #d35400; }\n\n  .wu-stat-bar { background: #1a1a2e; color: #fff; border-radius: 8px; padding: 1.1rem 1.4rem; margin: 1.2rem 0; display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: center; justify-content: space-around; }\n  .wu-stat { text-align: center; }\n  .wu-stat .num { font-size: 26px !important; font-weight: 800; color: #ff6b6b; line-height: 1; }\n  .wu-stat .lbl { font-size: 12px !important; color: #aab; margin-top: 2px; }\n\n  .wu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 0.85rem; margin-bottom: 1.2rem; }\n  .wu-card { background: #fef5f5; border: 1px solid #f5c0c0; border-radius: 6px; padding: 1rem 1.1rem; line-height: 1.6; }\n  .wu-card strong { display: block; color: #1a1a2e; margin-bottom: 0.35rem; font-size: 16px !important; }\n\n  .wu-reg-box { background: #fff8e6; border: 1px solid #f0d080; border-radius: 6px; padding: 1rem 1.3rem; margin: 1.2rem 0; color: #5a4a00; }\n  .wu-reg-box p { margin: 0 0 0.5rem !important; }\n  .wu-reg-box p:last-child { margin: 0 !important; }\n\n  .wu-safety-box { background: #fef5f5; border: 2px solid #c0392b; border-radius: 6px; padding: 1rem 1.3rem; margin: 1.2rem 0; }\n  .wu-safety-box p { margin: 0 !important; color: #7a1a1a; }\n\n  .wu-variant-table { width: 100%; border-collapse: collapse; margin-bottom: 1.2rem; }\n  .wu-variant-table th { background: #1a1a2e; color: #fff !important; padding: 0.65rem 0.9rem; font-size: 14px !important; text-align: left; }\n  .wu-variant-table td { padding: 0.55rem 0.9rem; border-bottom: 1px solid #e8d8d8; font-size: 14px !important; vertical-align: top; }\n  .wu-variant-table tr:nth-child(even) td { background: #fef5f5; }\n  .wu-variant-table td:first-child { font-weight: 600; color: #111; width: 25%; }\n  .wu-variant-table .col-highlight td:first-child { color: #c0392b !important; font-weight: 700; }\n\n  .wu-spec-table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; }\n  .wu-spec-table th { background: #1a1a2e; color: #fff !important; text-align: left; padding: 0.7rem 1rem; font-weight: 700; font-size: 16px !important; }\n  .wu-spec-table td { padding: 0.6rem 1rem; border-bottom: 1px solid #e8d8d8; vertical-align: top; font-size: 16px !important; }\n  .wu-spec-table tr:nth-child(even) td { background: #fef5f5; }\n  .wu-spec-table td:first-child { font-weight: 600; color: #111; width: 44%; }\n  .wu-spec-table .section-head td { background: #c0392b !important; color: #fff !important; font-weight: 700 !important; font-size: 14px !important; text-transform: uppercase; letter-spacing: 0.05em; }\n\n  .wu-install-steps { counter-reset: install-step; list-style: none !important; padding: 0 !important; margin: 0 0 1rem !important; }\n  .wu-install-steps li { counter-increment: install-step; padding: 0.6rem 0.8rem 0.6rem 3rem !important; position: relative; border-bottom: 1px solid #e8d8d8; font-size: 15px !important; margin: 0 !important; }\n  .wu-install-steps li::before { content: counter(install-step); position: absolute; left: 0.7rem; top: 50%; transform: translateY(-50%); background: #c0392b; color: #fff; width: 22px; height: 22px; border-radius: 50%; font-size: 13px !important; font-weight: 700; display: flex; align-items: center; justify-content: center; line-height: 1; }\n  .wu-install-steps li:last-child { border-bottom: none; }\n\n  .wu-faq-item { border-bottom: 1px solid #e8d8d8; padding: 1rem 0; }\n  .wu-faq-item:last-child { border-bottom: none; }\n  .wu-faq-item p { margin: 0.4rem 0 0 !important; }\n\n  .wu-infobox { background: #fef5f5; border: 1px solid #f5c0c0; border-radius: 6px; padding: 1rem 1.2rem; margin-top: 1.5rem; font-size: 16px !important; line-height: 1.6; }\n\n  @media (max-width: 600px) {\n    .wu-grid { grid-template-columns: 1fr 1fr; }\n    .wu-stat-bar { justify-content: center; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"wu-desc\"\u003e\n\u003cdiv class=\"wu-intro-box\"\u003e\n\u003cp\u003e\u003cspan class=\"wu-badge\"\u003eStandalone\u003c\/span\u003e \u003cspan class=\"wu-badge dark\"\u003e10-Year Sealed Battery\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"margin-top: 0.75rem !important;\"\u003eThe \u003cstrong\u003eWisualarm \u003c\/strong\u003eDHI-HY-GC20D is a standalone carbon monoxide alarm with a \u003cstrong\u003e10-year sealed 3V CR123A lithium battery\u003c\/strong\u003e — designed to provide a full decade of continuous protection with zero battery maintenance. It uses a high-performance \u003cstrong\u003eFigaro electrochemical CO sensor\u003c\/strong\u003e, recognised as one of the most reliable and accurate sensor technologies for domestic CO detection, and is certified to \u003cstrong\u003eEN 50291-1:2018\u003c\/strong\u003e — the current British and European standard for residential CO alarms. An integrated LCD display shows live CO concentration in ppm, combined with a \u0026gt;85dB audible alarm and visual LED indicator, gives occupants clear real-time information when it matters most. A single-button test and silence function makes routine testing and false-alarm management simple.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat-bar\"\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e10yr\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eSealed Battery Life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e85dB+\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eAlarm Volume @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003eLCD\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eLive CO Display (ppm)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e~45s\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eSilence Duration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003eEN 50291\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003e-1:2018 Certified\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e125g\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-reg-box\"\u003e\n\u003cp\u003e🏠 \u003cstrong\u003eUK Legal Requirement — Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022:\u003c\/strong\u003e Since 1 October 2022, private sector landlords in England are legally required to install a CO alarm in any room with a fixed combustion appliance (excluding gas cookers). This includes rooms with gas boilers, gas fires, oil boilers, solid fuel stoves and open fireplaces. Social landlords have been subject to the same requirement since 1 February 2023. The DHI-HY-GC20D, certified to EN 50291-1:2018, meets the technical standard required to comply with this legislation. Similar requirements apply in Scotland, Wales and Northern Ireland under their respective regulations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"wu-grid\"\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔬 Figaro Electrochemical CO Sensor\u003c\/strong\u003eThe Figaro electrochemical sensor is a precision CO detection technology that measures CO concentration through a controlled electrochemical reaction. It delivers high sensitivity, excellent selectivity (low cross-sensitivity to hydrogen and other gases that trigger false alarms in cheaper catalyst-bead sensors), fast response to rising CO levels, and a stable, calibrated performance maintained over the full 10-year sensor life.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e📺 LCD Display — Live CO Reading in ppm\u003c\/strong\u003eThe integrated LCD screen shows the current carbon monoxide concentration in parts per million (ppm) in real time. This is particularly valuable to emergency responders and service engineers: rather than just knowing the alarm has triggered, they can see the actual concentration level — helping to determine the severity of a leak and whether evacuation or ventilation is sufficient. The display also shows a peak-level CO memory, recording the highest concentration detected.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔋 10-Year Sealed Battery — Zero Maintenance\u003c\/strong\u003eA non-replaceable 3V CR123A lithium battery powers the alarm for its entire 10-year service life. The sealed design eliminates the most common cause of CO alarm failure: occupants removing or not replacing flat batteries. At end of life, the unit emits an end-of-life warning and the entire alarm is replaced — ensuring the sensor and battery are always within their service window. Ideal for rental properties where battery maintenance cannot be guaranteed.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔊 \u0026gt;85dB Audible + Visual Alarm\u003c\/strong\u003eThe alarm sounder exceeds 85dB(A) measured at 3 metres, meeting the EN 50291 audible output requirement. A visual LED indicator provides an additional alarm signal — important for occupants with hearing impairment and for confirming alarm status from a distance. The combined audio\/visual indication continues until the alarm is silenced or the CO level drops below the threshold.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔕 Test and Silence — Single Button\u003c\/strong\u003eOne button handles both routine self-testing (press to trigger the test cycle, confirming sensor, sounder and battery are functional) and temporary silencing during a nuisance alarm event — typically caused by brief peaks from cooking near the unit. The ~45-second silence duration prevents extended disturbance while keeping the alarm active to detect genuine CO build-up. Silencing does not disable the alarm permanently.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e📍 Standalone — No Wiring, No Hub Required\u003c\/strong\u003eThe DHI-HY-GC20D operates entirely independently — no mains wiring, no Wi-Fi, no gateway, no subscription, no app. It is ready to use straight from the box with a simple wall-mount installation. This makes it the right choice wherever a simple, reliable, code-compliant CO alarm is needed without any infrastructure requirements. For wireless interconnected coverage across a whole property, see the DHI-HY-GC20D-R8 variant.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhere to Install\u003c\/h2\u003e\n\u003cp\u003eCO alarms should be installed wherever a combustion appliance is present and wherever occupants sleep. The following guidance is based on BS EN 50292 (the installation standard that accompanies EN 50291) and HSE recommendations:\u003c\/p\u003e\n\u003cul class=\"wu-install-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvery room with a fixed combustion appliance\u003c\/strong\u003e — gas or oil boiler, gas fire, wood-burning stove, open fireplace, log burner, or pellet stove. The alarm should be on the same level as the appliance, within 1–3 metres where possible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach sleeping level of the home\u003c\/strong\u003e — CO is particularly dangerous at night when occupants cannot self-evacuate. An alarm in or adjacent to sleeping areas provides the earliest possible warning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting height\u003c\/strong\u003e — CO has a similar density to air and disperses evenly. EN 50292 recommends mounting on a wall or ceiling. Wall mounting: between 1.5m and 2.1m above the floor. Ceiling mounting: as per manufacturer instructions (minimum 300mm from walls\/corners).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid\u003c\/strong\u003e — direct sunlight, areas of high humidity (bathrooms, directly above cookers), areas with strong airflow (directly next to windows, fans or air conditioning vents), and garages or enclosed parking areas (vehicle exhaust will trigger the alarm).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStandalone vs Wireless Interconnected — Which Variant?\u003c\/h2\u003e\n\u003ctable class=\"wu-variant-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDHI-HY-GC20D ★ (this product)\u003cbr\u003e\u003csmall\u003eStandalone\u003c\/small\u003e\n\u003c\/th\u003e\n\u003cth\u003eDHI-HY-GC20D-R8\u003cbr\u003e\u003csmall\u003eWireless Interconnected\u003c\/small\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless interconnection\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Yes — up to 24 Wisulink devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp \/ smart home integration\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Optional — via DHI-HY-GW01A Gateway\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery\u003c\/td\u003e\n\u003ctd\u003e10-year sealed CR123A (non-replaceable)\u003c\/td\u003e\n\u003ctd\u003e10-year sealed CR123A (non-replaceable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD CO display\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm volume\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;85dB @ 3m\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;85dB @ 3m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEN 50291-1:2018 certified\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +40°C\u003c\/td\u003e\n\u003ctd\u003e-10°C to +55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eSingle-room compliance, simple installs, rental properties, cost-effective standalone protection\u003c\/td\u003e\n\u003ctd\u003eMulti-room or whole-home coverage, properties where alarm in one room should sound all alarms, smart monitoring via app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"wu-safety-box\"\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eCarbon monoxide — know the symptoms:\u003c\/strong\u003e CO is colourless and odourless — it cannot be detected by the senses alone. Symptoms of CO poisoning include headache, dizziness, nausea, breathlessness and confusion. If your CO alarm sounds: \u003cstrong\u003edo not ignore it\u003c\/strong\u003e. Open windows and doors, evacuate immediately, do not re-enter until declared safe by the emergency services or gas-safe engineer. Call the Gas Emergency number: \u003cstrong\u003e0800 111 999\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"wu-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eProduct Identity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel number\u003c\/td\u003e\n\u003ctd\u003eDHI-HY-GC20D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWisualarm (by Dahua)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVariant\u003c\/td\u003e\n\u003ctd\u003eStandalone (non-wireless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eDetection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor type\u003c\/td\u003e\n\u003ctd\u003eElectrochemical (Figaro)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGas detected\u003c\/td\u003e\n\u003ctd\u003eCarbon monoxide (CO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor life\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eAlarm Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm volume\u003c\/td\u003e\n\u003ctd\u003eOver 85dB(A) at 3 metres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm mode\u003c\/td\u003e\n\u003ctd\u003eVisual (LED) and audible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilence function\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilence duration\u003c\/td\u003e\n\u003ctd\u003eApproximately 45 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLCD — live CO concentration (ppm) and peak-level memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003ePower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower source\u003c\/td\u003e\n\u003ctd\u003e3V CR123A lithium battery (non-replaceable, sealed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery life\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow battery warning\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd-of-life warning\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eEnvironmental\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage environment\u003c\/td\u003e\n\u003ctd\u003eIndoor use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +40°C (+14°F to +104°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative humidity\u003c\/td\u003e\n\u003ctd\u003e≤95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003ePhysical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e116.4 × 71.7 × 28.3mm (4.58\" × 2.82\" × 1.11\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e125g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing material\u003c\/td\u003e\n\u003ctd\u003ePC + ABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation method\u003c\/td\u003e\n\u003ctd\u003eWall mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eCertifications \u0026amp; Standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard compliance\u003c\/td\u003e\n\u003ctd\u003eEN 50291-1:2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eTÜV, CE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless interconnection\u003c\/td\u003e\n\u003ctd\u003eNot supported (standalone only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eDoes this alarm comply with the Smoke and Carbon Monoxide Alarm Regulations 2022?\u003c\/h3\u003e\n\u003cp\u003eYes. The DHI-HY-GC20D is certified to EN 50291-1:2018, which is the standard specified in the statutory guidance accompanying the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022 (England). It meets the technical requirements for a compliant CO alarm for private and social rented properties. The regulations require CO alarms in rooms with fixed combustion appliances (excluding gas cookers); this alarm is appropriate for those locations when used as a standalone unit. For properties requiring interconnected alarms across multiple rooms (e.g. to meet Scottish regulations under the Housing (Scotland) Act 2006), the wireless DHI-HY-GC20D-R8 variant should be considered.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eCan the battery be replaced when it runs low?\u003c\/h3\u003e\n\u003cp\u003eNo — the battery is permanently sealed within the unit and is not designed to be replaced. This is a deliberate safety feature: the sealed design ensures the alarm cannot be inadvertently disabled by battery removal, and the 10-year service life is matched to the sensor's operational lifespan. When the end-of-life warning sounds (typically after 10 years), the entire unit should be replaced. This is consistent with BS EN 50291 guidance on CO alarm replacement intervals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eWhat is the difference between this and the DHI-HY-GC20D-R8?\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDHI-HY-GC20D\u003c\/strong\u003e (this product) is a standalone alarm — it operates independently, with no wireless connectivity to other alarms. It is the simpler, lower-cost option for single-room CO protection or for properties where interconnection is not required. The \u003cstrong\u003eDHI-HY-GC20D-R8\u003c\/strong\u003e adds Wisulink RF wireless interconnection, allowing it to communicate with up to 24 other Wisualarm devices (smoke alarms, heat alarms, CO alarms) — when one triggers, all sound simultaneously. It can also be connected to the optional Wisualarm Gateway (DHI-HY-GW01A) for smartphone app alerts. Both share the same Figaro electrochemical sensor, LCD display and 10-year sealed battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eMy alarm is beeping briefly every minute — is this an emergency?\u003c\/h3\u003e\n\u003cp\u003eA single brief beep every 30–60 seconds typically indicates either a low battery warning or an end-of-life signal — not a CO alarm event. A CO alarm triggers a continuous or rapid pattern of beeps. Refer to the user manual for the specific beep pattern meanings for this model. If the rapid alarm pattern sounds, treat it as a CO emergency, evacuate, and call the gas emergency line (0800 111 999) — do not assume it is a false alarm without investigation by a qualified engineer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":63582067130717,"sku":"DHI-HY-GC20D","price":19.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/WisuAlarmCOMonoxideAlarmDHI-HY-GC20D.png?v=1771922374"},{"product_id":"wisualarm-wireless-carbon-monoxide-alarm-10-year-sealed-battery-lcd-co-temp-humidity-display","title":"Wisualarm Wireless Carbon Monoxide Alarm | 10-Year Sealed Battery | LCD CO + Temp + Humidity Display","description":"\u003cstyle\u003e\n  .wu-desc * { box-sizing: border-box; }\n  .wu-desc { font-family: inherit; color: inherit; line-height: 1.7; font-size: 16px; }\n  .wu-desc p, .wu-desc li, .wu-desc td, .wu-desc th { font-size: 16px !important; line-height: 1.7; }\n  .wu-desc h2 { font-size: 22px !important; font-weight: 700; color: #1a1a2e; border-bottom: 2px solid #c0392b; padding-bottom: 6px; margin: 2rem 0 1rem; line-height: 1.3; }\n  .wu-desc h3 { font-size: 17px !important; font-weight: 700; color: #1a1a2e; margin: 1.2rem 0 0.4rem; line-height: 1.4; }\n  .wu-desc p { margin: 0 0 1rem; }\n  .wu-desc ul { padding-left: 1.5rem; margin: 0 0 1rem; }\n  .wu-desc ul li { margin-bottom: 0.5rem; }\n\n  .wu-intro-box { background: #fef5f5; border-left: 4px solid #c0392b; padding: 1.1rem 1.4rem; border-radius: 0 6px 6px 0; margin-bottom: 1.5rem; }\n  .wu-intro-box p { margin: 0 !important; }\n\n  .wu-badge { display: inline-block; background: #c0392b; color: #fff; font-size: 13px !important; font-weight: 700; border-radius: 4px; padding: 2px 10px; margin-right: 6px; margin-bottom: 4px; vertical-align: middle; }\n  .wu-badge.dark { background: #1a1a2e; }\n  .wu-badge.grey { background: #555; }\n  .wu-badge.green { background: #1a7a3c; 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color: #5a4a00; }\n  .wu-reg-box p { margin: 0 0 0.5rem !important; }\n  .wu-reg-box p:last-child { margin: 0 !important; }\n\n  .wu-safety-box { background: #fef5f5; border: 2px solid #c0392b; border-radius: 6px; padding: 1rem 1.3rem; margin: 1.2rem 0; }\n  .wu-safety-box p { margin: 0 !important; color: #7a1a1a; }\n\n  .wu-lcd-box { background: #eaf4fb; border: 1px solid #85c1e9; border-radius: 8px; padding: 1.1rem 1.4rem; margin: 1.2rem 0; }\n  .wu-lcd-box p { margin: 0 0 0.5rem !important; }\n  .wu-lcd-box p:last-child { margin: 0 !important; }\n\n  .wu-variant-table { width: 100%; border-collapse: collapse; margin-bottom: 1.2rem; }\n  .wu-variant-table th { background: #1a1a2e; color: #fff !important; padding: 0.65rem 0.9rem; font-size: 14px !important; text-align: left; }\n  .wu-variant-table td { padding: 0.55rem 0.9rem; border-bottom: 1px solid #e8d8d8; font-size: 14px !important; vertical-align: top; }\n  .wu-variant-table tr:nth-child(even) td { background: #fef5f5; }\n  .wu-variant-table td:first-child { font-weight: 600; 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}\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"wu-desc\"\u003e\n\u003cdiv class=\"wu-intro-box\"\u003e\n\u003cp\u003e\u003cspan class=\"wu-badge\"\u003eWireless Interconnected\u003c\/span\u003e \u003cspan class=\"wu-badge dark\"\u003e10-Year Sealed Battery\u003c\/span\u003e \u003cspan class=\"wu-badge teal\"\u003eCO + Temp + Humidity LCD\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"margin-top: 0.75rem !important;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-GC30A-R8\u003c\/strong\u003e is a wireless interconnected carbon monoxide alarm with a 10-year sealed lithium battery and a multi-function LCD display that shows \u003cstrong\u003elive CO concentration, ambient temperature and relative humidity\u003c\/strong\u003e — making it the most information-rich CO alarm in the Wisualarm battery-powered range. Like the GC20D-R8, it uses a high-performance electrochemical CO sensor and communicates wirelessly at 868 MHz with up to 24 other WisuLink-compatible devices, so triggering any alarm in the network sounds all of them simultaneously. The added temperature and humidity display makes it a genuinely useful everyday device, not just a passive safety tool waiting in the background, while the sealed battery eliminates 10 years of battery maintenance and the risk of occupant tampering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat-bar\"\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e3-in-1\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eCO + Temp + Humidity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e10yr\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eSealed Battery Life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e24\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eMax Linked Devices\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e868MHz\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eWisuLink RF\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e85dB+\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eAlarm @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003eEN 50291\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003e-1:2018 Certified\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-lcd-box\"\u003e\n\u003cp\u003e💡 \u003cstrong\u003eWhat the LCD displays:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIn standby (normal operation):\u003c\/strong\u003e The screen alternates between showing the current ambient \u003cstrong\u003etemperature\u003c\/strong\u003e and \u003cstrong\u003erelative humidity\u003c\/strong\u003e — giving occupants a useful at-a-glance environmental readout without any additional sensor hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDuring a CO alarm event:\u003c\/strong\u003e The display switches to show the live \u003cstrong\u003eCO concentration in parts per million (ppm)\u003c\/strong\u003e, enabling occupants and emergency responders to assess the severity of the exposure in real time rather than just knowing the alarm has triggered.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePeak CO memory:\u003c\/strong\u003e The alarm records and displays the highest CO concentration detected, which persists after the alarm clears — useful for engineers investigating the cause of an alarm event.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnd-of-life notification:\u003c\/strong\u003e The display provides a clear notification when the unit is approaching the end of its 10-year service life, ensuring timely replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"wu-grid\"\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e📡 Wireless Interconnect — Up to 24 Devices\u003c\/strong\u003eCommunicates at 868 MHz with the WisuLink wireless mesh. When the CO alarm triggers, every linked device in the network — smoke alarms, heat alarms and other CO alarms — sounds simultaneously, ensuring that an alarm in one room wakes occupants throughout the property. No wiring between devices is required. The 868 MHz band provides better wall penetration and range than the 2.4 GHz band used by Wi-Fi devices, making it well suited to multi-floor UK properties.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🌡️ Temperature \u0026amp; Humidity Display\u003c\/strong\u003eThe standby LCD display rotates between ambient temperature and relative humidity readings. This distinguishes the GC30A-R8 from the standard GC20D-R8: rather than a screen that sits dark until an alarm event, this unit provides genuinely useful environmental information at a glance — helpful in rooms with boilers, utility spaces, or any area where damp monitoring is useful alongside CO safety.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔬 Electrochemical CO Sensor — 10-Year Life\u003c\/strong\u003eHigh-performance electrochemical CO sensor delivers accurate, selective detection of carbon monoxide with low cross-sensitivity to other gases. The sensor is rated for 10 years of continuous operation — matched to the battery life so both are replaced simultaneously at end of life. Electrochemical sensing is the gold standard for residential CO detection, recommended by BS EN 50292 for domestic alarms.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔋 10-Year Sealed CR7450 Lithium Battery\u003c\/strong\u003ePowered by a sealed CR7450 lithium cell — a larger format battery than the CR123A used in the GC20D, providing the additional capacity needed to sustain 868 MHz RF communication over 10 years. The sealed design prevents battery removal and ensures the alarm cannot be unintentionally disabled by occupants. A low battery warning provides advance notice before the end of service life.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔊 \u0026gt;85dB Audible + Visual LED Alarm\u003c\/strong\u003eThe integrated sounder exceeds 85dB(A) at 3 metres. Three LED status indicators provide at-a-glance confirmation of operational status, alarm state and fault condition — useful for anyone checking the device visually across a room. The alarm sounds continuously from the time CO is detected until it is manually silenced or the CO level drops below the threshold.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e📱 Optional App Notifications via Gateway\u003c\/strong\u003eAdding the optional Wisualarm Internet Gateway (DHI-HY-GW01A) to the WisuLink network sends instant push notifications to the free Wisualarm app on your smartphone when any linked alarm triggers — including this CO alarm. Ideal for landlords, parents of young children, or anyone who spends time away from the property and wants remote awareness of alarm events. The Gateway connects to your router by Ethernet or Wi-Fi.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-reg-box\"\u003e\n\u003cp\u003e🏠 \u003cstrong\u003eUK Legal Requirement — Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022:\u003c\/strong\u003e Private sector landlords in England must install a CO alarm in every room with a fixed combustion appliance (excluding gas cookers). Social landlords have been subject to the same requirement since 1 February 2023. The DHI-HY-GC30A-R8, certified to EN 50291-1:2018, meets the technical standard required for compliance. For Scottish properties subject to the Housing (Scotland) Act 2006 requirements — which mandate interlinked alarms — the wireless interconnect capability of this model makes it particularly well suited compared to standalone alternatives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhere to Install\u003c\/h2\u003e\n\u003cul class=\"wu-install-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvery room with a fixed combustion appliance\u003c\/strong\u003e — gas or oil boiler, gas fire, log burner, open fireplace, wood-burning stove or pellet stove. The alarm should be within 1–3 metres of the appliance on the same level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach sleeping level of the home\u003c\/strong\u003e — CO is most dangerous at night when occupants cannot self-evacuate. An alarm on each sleeping floor, linked wirelessly to units near combustion appliances, maximises the warning time available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting height\u003c\/strong\u003e — CO disperses approximately evenly in air. EN 50292 recommends wall mounting between 1.5m and 2.1m above the floor, or ceiling mounting per manufacturer instructions (minimum 300mm from walls).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid\u003c\/strong\u003e — bathrooms, directly above cookers, near open windows or air vents (dilution reduces sensitivity), areas of direct sunlight, garages or car parks (vehicle exhaust will trigger false alarms).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWisualarm CO Alarm Comparison\u003c\/h2\u003e\n\u003ctable class=\"wu-variant-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDHI-HY-GC20D\u003cbr\u003e\u003csmall\u003eStandalone\u003c\/small\u003e\n\u003c\/th\u003e\n\u003cth\u003eDHI-HY-GC20D-R8\u003cbr\u003e\u003csmall\u003eWireless Interconnected\u003c\/small\u003e\n\u003c\/th\u003e\n\u003cth\u003eDHI-HY-GC30A-R8 ★\u003cbr\u003e\u003csmall\u003eThis product\u003c\/small\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless interconnection\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Up to 24 devices\u003c\/td\u003e\n\u003ctd\u003e✓ Up to 24 devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF frequency\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e868 MHz\u003c\/td\u003e\n\u003ctd\u003e868 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD — CO concentration\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD — Temperature display\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD — Humidity display\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery type\u003c\/td\u003e\n\u003ctd\u003eCR123A (sealed)\u003c\/td\u003e\n\u003ctd\u003eCR123A (sealed)\u003c\/td\u003e\n\u003ctd\u003eCR7450 (sealed, larger)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery life\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp alerts (with Gateway)\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Optional\u003c\/td\u003e\n\u003ctd\u003e✓ Optional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEN 50291-1:2018\u003c\/td\u003e\n\u003ctd\u003e✓ Certified\u003c\/td\u003e\n\u003ctd\u003e✓ Certified\u003c\/td\u003e\n\u003ctd\u003e✓ Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eSingle-room compliance, simple install\u003c\/td\u003e\n\u003ctd\u003eMulti-room coverage, basic interconnect\u003c\/td\u003e\n\u003ctd\u003eMulti-room coverage + environmental monitoring at each alarm location\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"wu-safety-box\"\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eCarbon monoxide — act immediately if the alarm sounds:\u003c\/strong\u003e CO is colourless and odourless. If your alarm activates: open windows and doors, evacuate the building immediately, do not re-enter until declared safe. Call the Gas Emergency line: \u003cstrong\u003e0800 111 999\u003c\/strong\u003e. Do not assume a CO alarm is a false alarm without investigation by a Gas Safe registered engineer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"wu-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eProduct Identity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel number\u003c\/td\u003e\n\u003ctd\u003eDHI-HY-GC30A-R8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWisualarm (by Dahua)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVariant\u003c\/td\u003e\n\u003ctd\u003eWireless interconnected (WisuLink)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eDetection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor type\u003c\/td\u003e\n\u003ctd\u003eElectrochemical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGas detected\u003c\/td\u003e\n\u003ctd\u003eCarbon monoxide (CO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor life\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eDisplay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay type\u003c\/td\u003e\n\u003ctd\u003eLCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby display\u003c\/td\u003e\n\u003ctd\u003eAmbient temperature and relative humidity (alternating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm display\u003c\/td\u003e\n\u003ctd\u003eLive CO concentration in ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak CO memory\u003c\/td\u003e\n\u003ctd\u003eYes — records highest concentration detected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd-of-life notification\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eAlarm Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm volume\u003c\/td\u003e\n\u003ctd\u003eOver 85dB(A) at 3 metres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm mode\u003c\/td\u003e\n\u003ctd\u003eVisual (3 × LED indicators) and audible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilence function\u003c\/td\u003e\n\u003ctd\u003eSupported (single button)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow battery warning\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eWireless Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication protocol\u003c\/td\u003e\n\u003ctd\u003eWisuLink RF mesh (868 MHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. interconnected devices\u003c\/td\u003e\n\u003ctd\u003e24 (including smoke, heat and CO alarms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp notifications\u003c\/td\u003e\n\u003ctd\u003eOptional — requires DHI-HY-GW01A Gateway\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003ePower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower source\u003c\/td\u003e\n\u003ctd\u003eDC 3V CR7450 lithium battery (non-replaceable, sealed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery life\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eEnvironmental\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage environment\u003c\/td\u003e\n\u003ctd\u003eIndoor use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation method\u003c\/td\u003e\n\u003ctd\u003eWall mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eCertifications \u0026amp; Standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard compliance\u003c\/td\u003e\n\u003ctd\u003eEN 50291-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eTÜV, CE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eWhat is the difference between this and the DHI-HY-GC20D-R8?\u003c\/h3\u003e\n\u003cp\u003eBoth are 10-year sealed battery wireless interconnected CO alarms with LCD displays and EN 50291-1:2018 certification. The \u003cstrong\u003eGC30A-R8\u003c\/strong\u003e (this product) adds \u003cstrong\u003eambient temperature and humidity display\u003c\/strong\u003e in standby mode — the LCD alternates between temp and humidity readings when no CO is detected, rather than remaining off. It also uses a larger CR7450 sealed battery cell (compared to CR123A in the GC20D-R8) to sustain the additional display functionality over the 10-year life. If temperature and humidity monitoring at the alarm location is useful for your application — utility rooms, plant rooms, or properties where damp is a concern alongside CO risk — the GC30A-R8 provides that without any additional sensor hardware. If a standard CO-only wireless interconnected alarm is sufficient, the GC20D-R8 is the more compact option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eCan this alarm be used as a standalone unit without interconnecting other devices?\u003c\/h3\u003e\n\u003cp\u003eYes. While the GC30A-R8 is designed to work within a WisuLink wireless mesh, it functions perfectly as a standalone CO alarm in a single-room installation. Wireless interconnection is available but not required — the alarm will detect CO and sound its own sounder regardless of whether other devices are paired. Pairing additional devices is done simply by following the linking procedure in the user manual; no installer tools or app are required for the interconnection itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eDoes this alarm comply with the Smoke and Carbon Monoxide Alarm Regulations 2022?\u003c\/h3\u003e\n\u003cp\u003eYes. The DHI-HY-GC30A-R8 is certified to EN 50291-1, the standard specified in the statutory guidance for the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022 in England. It is suitable for installation in rented properties to satisfy the legal requirement for a CO alarm in rooms with fixed combustion appliances. Its wireless interconnect capability also makes it appropriate for Scottish properties subject to the Housing (Scotland) Act 2006 interlinked alarm requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eHow do I receive smartphone alerts when the alarm triggers?\u003c\/h3\u003e\n\u003cp\u003eThe GC30A-R8 does not connect directly to Wi-Fi or the internet. Smartphone notifications require the optional \u003cstrong\u003eWisualarm Internet Gateway (DHI-HY-GW01A)\u003c\/strong\u003e, which connects to your router by Ethernet or Wi-Fi and bridges the WisuLink 868 MHz mesh to the internet. Once the Gateway is added to the network, the free Wisualarm app on your smartphone will receive push notifications whenever any linked device — including this CO alarm — triggers. The Gateway is sold separately and is a single purchase covering all linked devices in the network.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-infobox\"\u003e\n\u003cstrong\u003eℹ️ Often purchased with:\u003c\/strong\u003e \u003cstrong\u003eDHI-HY-GW01A\u003c\/strong\u003e — Wisualarm Internet Gateway for smartphone app alerts · \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":63582142726493,"sku":"DHI-HY-GC30A-R8","price":33.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/F1CarbonMonoxideAlarmDHI-HY-GC30A.webp?v=1771923197"},{"product_id":"wisualarm-wi-fi-ethernet-gateway-wireless-interconnect-bridge-for-wisulink-alarms","title":"Wisualarm Wi-Fi \u0026 Ethernet Gateway | Wireless Interconnect Bridge for WisuLink Alarms","description":"\u003cstyle\u003e\n  .wu-desc * { box-sizing: border-box; }\n  .wu-desc { font-family: inherit; color: inherit; line-height: 1.7; 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}\n  .wu-variant-table tr:nth-child(even) td { background: #fef5f5; }\n  .wu-variant-table td:first-child { font-weight: 600; color: #111; width: 28%; }\n  .wu-variant-table .col-highlight td:first-child { color: #c0392b !important; font-weight: 700; }\n\n  .wu-spec-table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; }\n  .wu-spec-table th { background: #1a1a2e; color: #fff !important; text-align: left; padding: 0.7rem 1rem; font-weight: 700; font-size: 16px !important; }\n  .wu-spec-table td { padding: 0.6rem 1rem; border-bottom: 1px solid #e8d8d8; vertical-align: top; font-size: 16px !important; }\n  .wu-spec-table tr:nth-child(even) td { background: #fef5f5; }\n  .wu-spec-table td:first-child { font-weight: 600; color: #111; width: 44%; }\n  .wu-spec-table .section-head td { background: #c0392b !important; color: #fff !important; font-weight: 700 !important; font-size: 14px !important; text-transform: uppercase; letter-spacing: 0.05em; }\n\n  .wu-install-steps { counter-reset: install-step; list-style: none !important; padding: 0 !important; margin: 0 0 1rem !important; }\n  .wu-install-steps li { counter-increment: install-step; padding: 0.6rem 0.8rem 0.6rem 3rem !important; position: relative; border-bottom: 1px solid #e8d8d8; font-size: 15px !important; margin: 0 !important; }\n  .wu-install-steps li::before { content: counter(install-step); position: absolute; left: 0.7rem; top: 50%; transform: translateY(-50%); background: #c0392b; color: #fff; width: 22px; height: 22px; border-radius: 50%; font-size: 13px !important; font-weight: 700; display: flex; align-items: center; justify-content: center; line-height: 1; }\n  .wu-install-steps li:last-child { border-bottom: none; }\n\n  .wu-faq-item { border-bottom: 1px solid #e8d8d8; padding: 1rem 0; }\n  .wu-faq-item:last-child { border-bottom: none; }\n  .wu-faq-item p { margin: 0.4rem 0 0 !important; }\n\n  .wu-infobox { background: #fef5f5; border: 1px solid #f5c0c0; border-radius: 6px; padding: 1rem 1.2rem; margin-top: 1.5rem; font-size: 16px !important; line-height: 1.6; }\n\n  @media (max-width: 600px) {\n    .wu-grid { grid-template-columns: 1fr 1fr; }\n    .wu-stat-bar { justify-content: center; }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"wu-desc\"\u003e\n\u003cdiv class=\"wu-intro-box\"\u003e\n\u003cp\u003e\u003cspan class=\"wu-badge\"\u003eWireless Interconnected\u003c\/span\u003e \u003cspan class=\"wu-badge dark\"\u003e10-Year Sealed Battery\u003c\/span\u003e \u003cspan class=\"wu-badge teal\"\u003eCO + Temp + Humidity LCD\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"margin-top: 0.75rem !important;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-GC30A-R8\u003c\/strong\u003e is a wireless interconnected carbon monoxide alarm with a 10-year sealed lithium battery and a multi-function LCD display that shows \u003cstrong\u003elive CO concentration, ambient temperature and relative humidity\u003c\/strong\u003e — making it the most information-rich CO alarm in the Wisualarm battery-powered range. Like the GC20D-R8, it uses a high-performance electrochemical CO sensor and communicates wirelessly at 868 MHz with up to 24 other WisuLink-compatible devices, so triggering any alarm in the network sounds all of them simultaneously. The added temperature and humidity display makes it a genuinely useful everyday device, not just a passive safety tool waiting in the background, while the sealed battery eliminates 10 years of battery maintenance and the risk of occupant tampering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat-bar\"\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e3-in-1\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eCO + Temp + Humidity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e10yr\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eSealed Battery Life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e24\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eMax Linked Devices\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e868MHz\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eWisuLink RF\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003e85dB+\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eAlarm @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-stat\"\u003e\n\u003cdiv class=\"num\"\u003eEN 50291\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003e-1:2018 Certified\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-lcd-box\"\u003e\n\u003cp\u003e💡 \u003cstrong\u003eWhat the LCD displays:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIn standby (normal operation):\u003c\/strong\u003e The screen alternates between showing the current ambient \u003cstrong\u003etemperature\u003c\/strong\u003e and \u003cstrong\u003erelative humidity\u003c\/strong\u003e — giving occupants a useful at-a-glance environmental readout without any additional sensor hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDuring a CO alarm event:\u003c\/strong\u003e The display switches to show the live \u003cstrong\u003eCO concentration in parts per million (ppm)\u003c\/strong\u003e, enabling occupants and emergency responders to assess the severity of the exposure in real time rather than just knowing the alarm has triggered.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePeak CO memory:\u003c\/strong\u003e The alarm records and displays the highest CO concentration detected, which persists after the alarm clears — useful for engineers investigating the cause of an alarm event.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnd-of-life notification:\u003c\/strong\u003e The display provides a clear notification when the unit is approaching the end of its 10-year service life, ensuring timely replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"wu-grid\"\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e📡 Wireless Interconnect — Up to 24 Devices\u003c\/strong\u003eCommunicates at 868 MHz with the WisuLink wireless mesh. When the CO alarm triggers, every linked device in the network — smoke alarms, heat alarms and other CO alarms — sounds simultaneously, ensuring that an alarm in one room wakes occupants throughout the property. No wiring between devices is required. The 868 MHz band provides better wall penetration and range than the 2.4 GHz band used by Wi-Fi devices, making it well suited to multi-floor UK properties.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🌡️ Temperature \u0026amp; Humidity Display\u003c\/strong\u003eThe standby LCD display rotates between ambient temperature and relative humidity readings. This distinguishes the GC30A-R8 from the standard GC20D-R8: rather than a screen that sits dark until an alarm event, this unit provides genuinely useful environmental information at a glance — helpful in rooms with boilers, utility spaces, or any area where damp monitoring is useful alongside CO safety.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔬 Electrochemical CO Sensor — 10-Year Life\u003c\/strong\u003eHigh-performance electrochemical CO sensor delivers accurate, selective detection of carbon monoxide with low cross-sensitivity to other gases. The sensor is rated for 10 years of continuous operation — matched to the battery life so both are replaced simultaneously at end of life. Electrochemical sensing is the gold standard for residential CO detection, recommended by BS EN 50292 for domestic alarms.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔋 10-Year Sealed CR7450 Lithium Battery\u003c\/strong\u003ePowered by a sealed CR7450 lithium cell — a larger format battery than the CR123A used in the GC20D, providing the additional capacity needed to sustain 868 MHz RF communication over 10 years. The sealed design prevents battery removal and ensures the alarm cannot be unintentionally disabled by occupants. A low battery warning provides advance notice before the end of service life.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e🔊 \u0026gt;85dB Audible + Visual LED Alarm\u003c\/strong\u003eThe integrated sounder exceeds 85dB(A) at 3 metres. Three LED status indicators provide at-a-glance confirmation of operational status, alarm state and fault condition — useful for anyone checking the device visually across a room. The alarm sounds continuously from the time CO is detected until it is manually silenced or the CO level drops below the threshold.\u003c\/div\u003e\n\u003cdiv class=\"wu-card\"\u003e\n\u003cstrong\u003e📱 Optional App Notifications via Gateway\u003c\/strong\u003eAdding the optional Wisualarm Internet Gateway (DHI-HY-GW01A) to the WisuLink network sends instant push notifications to the free Wisualarm app on your smartphone when any linked alarm triggers — including this CO alarm. Ideal for landlords, parents of young children, or anyone who spends time away from the property and wants remote awareness of alarm events. The Gateway connects to your router by Ethernet or Wi-Fi.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-reg-box\"\u003e\n\u003cp\u003e🏠 \u003cstrong\u003eUK Legal Requirement — Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022:\u003c\/strong\u003e Private sector landlords in England must install a CO alarm in every room with a fixed combustion appliance (excluding gas cookers). Social landlords have been subject to the same requirement since 1 February 2023. The DHI-HY-GC30A-R8, certified to EN 50291-1:2018, meets the technical standard required for compliance. For Scottish properties subject to the Housing (Scotland) Act 2006 requirements — which mandate interlinked alarms — the wireless interconnect capability of this model makes it particularly well suited compared to standalone alternatives.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eWhere to Install\u003c\/h2\u003e\n\u003cul class=\"wu-install-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvery room with a fixed combustion appliance\u003c\/strong\u003e — gas or oil boiler, gas fire, log burner, open fireplace, wood-burning stove or pellet stove. The alarm should be within 1–3 metres of the appliance on the same level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach sleeping level of the home\u003c\/strong\u003e — CO is most dangerous at night when occupants cannot self-evacuate. An alarm on each sleeping floor, linked wirelessly to units near combustion appliances, maximises the warning time available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting height\u003c\/strong\u003e — CO disperses approximately evenly in air. EN 50292 recommends wall mounting between 1.5m and 2.1m above the floor, or ceiling mounting per manufacturer instructions (minimum 300mm from walls).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid\u003c\/strong\u003e — bathrooms, directly above cookers, near open windows or air vents (dilution reduces sensitivity), areas of direct sunlight, garages or car parks (vehicle exhaust will trigger false alarms).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWisualarm CO Alarm Comparison\u003c\/h2\u003e\n\u003ctable class=\"wu-variant-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDHI-HY-GC20D\u003cbr\u003e\u003csmall\u003eStandalone\u003c\/small\u003e\n\u003c\/th\u003e\n\u003cth\u003eDHI-HY-GC20D-R8\u003cbr\u003e\u003csmall\u003eWireless Interconnected\u003c\/small\u003e\n\u003c\/th\u003e\n\u003cth\u003eDHI-HY-GC30A-R8 ★\u003cbr\u003e\u003csmall\u003eThis product\u003c\/small\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless interconnection\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Up to 24 devices\u003c\/td\u003e\n\u003ctd\u003e✓ Up to 24 devices\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF frequency\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e868 MHz\u003c\/td\u003e\n\u003ctd\u003e868 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD — CO concentration\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD — Temperature display\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLCD — Humidity display\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery type\u003c\/td\u003e\n\u003ctd\u003eCR123A (sealed)\u003c\/td\u003e\n\u003ctd\u003eCR123A (sealed)\u003c\/td\u003e\n\u003ctd\u003eCR7450 (sealed, larger)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery life\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp alerts (with Gateway)\u003c\/td\u003e\n\u003ctd\u003e✗ No\u003c\/td\u003e\n\u003ctd\u003e✓ Optional\u003c\/td\u003e\n\u003ctd\u003e✓ Optional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEN 50291-1:2018\u003c\/td\u003e\n\u003ctd\u003e✓ Certified\u003c\/td\u003e\n\u003ctd\u003e✓ Certified\u003c\/td\u003e\n\u003ctd\u003e✓ Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest for\u003c\/td\u003e\n\u003ctd\u003eSingle-room compliance, simple install\u003c\/td\u003e\n\u003ctd\u003eMulti-room coverage, basic interconnect\u003c\/td\u003e\n\u003ctd\u003eMulti-room coverage + environmental monitoring at each alarm location\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"wu-safety-box\"\u003e\n\u003cp\u003e⚠️ \u003cstrong\u003eCarbon monoxide — act immediately if the alarm sounds:\u003c\/strong\u003e CO is colourless and odourless. If your alarm activates: open windows and doors, evacuate the building immediately, do not re-enter until declared safe. Call the Gas Emergency line: \u003cstrong\u003e0800 111 999\u003c\/strong\u003e. Do not assume a CO alarm is a false alarm without investigation by a Gas Safe registered engineer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"wu-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eProduct Identity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel number\u003c\/td\u003e\n\u003ctd\u003eDHI-HY-GC30A-R8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWisualarm (by Dahua)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVariant\u003c\/td\u003e\n\u003ctd\u003eWireless interconnected (WisuLink)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eDetection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor type\u003c\/td\u003e\n\u003ctd\u003eElectrochemical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGas detected\u003c\/td\u003e\n\u003ctd\u003eCarbon monoxide (CO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor life\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eDisplay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay type\u003c\/td\u003e\n\u003ctd\u003eLCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby display\u003c\/td\u003e\n\u003ctd\u003eAmbient temperature and relative humidity (alternating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm display\u003c\/td\u003e\n\u003ctd\u003eLive CO concentration in ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak CO memory\u003c\/td\u003e\n\u003ctd\u003eYes — records highest concentration detected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd-of-life notification\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eAlarm Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm volume\u003c\/td\u003e\n\u003ctd\u003eOver 85dB(A) at 3 metres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm mode\u003c\/td\u003e\n\u003ctd\u003eVisual (3 × LED indicators) and audible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilence function\u003c\/td\u003e\n\u003ctd\u003eSupported (single button)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow battery warning\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eWireless Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication protocol\u003c\/td\u003e\n\u003ctd\u003eWisuLink RF mesh (868 MHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. interconnected devices\u003c\/td\u003e\n\u003ctd\u003e24 (including smoke, heat and CO alarms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp notifications\u003c\/td\u003e\n\u003ctd\u003eOptional — requires DHI-HY-GW01A Gateway\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003ePower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower source\u003c\/td\u003e\n\u003ctd\u003eDC 3V CR7450 lithium battery (non-replaceable, sealed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery life\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eEnvironmental\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage environment\u003c\/td\u003e\n\u003ctd\u003eIndoor use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation method\u003c\/td\u003e\n\u003ctd\u003eWall mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"section-head\"\u003e\n\u003ctd colspan=\"2\"\u003eCertifications \u0026amp; Standards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard compliance\u003c\/td\u003e\n\u003ctd\u003eEN 50291-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eTÜV, CE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eWhat is the difference between this and the DHI-HY-GC20D-R8?\u003c\/h3\u003e\n\u003cp\u003eBoth are 10-year sealed battery wireless interconnected CO alarms with LCD displays and EN 50291-1:2018 certification. The \u003cstrong\u003eGC30A-R8\u003c\/strong\u003e (this product) adds \u003cstrong\u003eambient temperature and humidity display\u003c\/strong\u003e in standby mode — the LCD alternates between temp and humidity readings when no CO is detected, rather than remaining off. It also uses a larger CR7450 sealed battery cell (compared to CR123A in the GC20D-R8) to sustain the additional display functionality over the 10-year life. If temperature and humidity monitoring at the alarm location is useful for your application — utility rooms, plant rooms, or properties where damp is a concern alongside CO risk — the GC30A-R8 provides that without any additional sensor hardware. If a standard CO-only wireless interconnected alarm is sufficient, the GC20D-R8 is the more compact option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eCan this alarm be used as a standalone unit without interconnecting other devices?\u003c\/h3\u003e\n\u003cp\u003eYes. While the GC30A-R8 is designed to work within a WisuLink wireless mesh, it functions perfectly as a standalone CO alarm in a single-room installation. Wireless interconnection is available but not required — the alarm will detect CO and sound its own sounder regardless of whether other devices are paired. Pairing additional devices is done simply by following the linking procedure in the user manual; no installer tools or app are required for the interconnection itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eDoes this alarm comply with the Smoke and Carbon Monoxide Alarm Regulations 2022?\u003c\/h3\u003e\n\u003cp\u003eYes. The DHI-HY-GC30A-R8 is certified to EN 50291-1, the standard specified in the statutory guidance for the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022 in England. It is suitable for installation in rented properties to satisfy the legal requirement for a CO alarm in rooms with fixed combustion appliances. Its wireless interconnect capability also makes it appropriate for Scottish properties subject to the Housing (Scotland) Act 2006 interlinked alarm requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-faq-item\"\u003e\n\u003ch3\u003eHow do I receive smartphone alerts when the alarm triggers?\u003c\/h3\u003e\n\u003cp\u003eThe GC30A-R8 does not connect directly to Wi-Fi or the internet. Smartphone notifications require the optional \u003cstrong\u003eWisualarm Internet Gateway (DHI-HY-GW01A)\u003c\/strong\u003e, which connects to your router by Ethernet or Wi-Fi and bridges the WisuLink 868 MHz mesh to the internet. Once the Gateway is added to the network, the free Wisualarm app on your smartphone will receive push notifications whenever any linked device — including this CO alarm — triggers. The Gateway is sold separately and is a single purchase covering all linked devices in the network.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wu-infobox\"\u003e\n\u003cstrong\u003eℹ️ Often purchased with:\u003c\/strong\u003e \u003cstrong\u003eDHI-HY-GW01A\u003c\/strong\u003e — Wisualarm Internet Gateway for smartphone app alerts · \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":63582255776093,"sku":"DHI-HY-GW01A","price":99.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/WisuAlarmHY-GW01AAlarmWi-FiandEthernetGateway.webp?v=1771923431"},{"product_id":"wisualarm-mains-powered-heat-alarm-grade-d2-class-a1-54-65-c-9v-battery-backup-wired-interconnect","title":"Wisualarm Mains Powered Heat Alarm | Grade D2 | Class A1 54–65°C | 9V Battery Backup | Wired Interconnect","description":"\u003c!-- SEO Product Name: Wisualarm Mains Heat Alarm 54-65C | DHI-HY-HT5MB | Replaceable 9V Backup --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-HT5MB\u003c\/strong\u003e is a mains-powered Class A1 fixed-temperature heat alarm certified to \u003cstrong\u003eBS 5446-2:2003\u003c\/strong\u003e, designed for rooms where a smoke alarm would cause persistent false activations — principally kitchens, garages, utility rooms and loft spaces. It draws its primary power from a permanent 230V mains connection and includes a \u003cstrong\u003ereplaceable 9V alkaline battery\u003c\/strong\u003e as standby backup, classifying it as a \u003cstrong\u003eGrade D2 device under BS 5839-6\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eA high-precision \u003cstrong\u003ethermistor\u003c\/strong\u003e triggers the alarm when the ambient temperature reaches \u003cstrong\u003e54°C–65°C\u003c\/strong\u003e, and the 85dB sounder runs continuously until reset. The unit interconnects by wire with up to \u003cstrong\u003e24 other Wisualarm mains-powered smoke and heat alarms\u003c\/strong\u003e, and can optionally join the \u003cstrong\u003eWisuLink wireless mesh\u003c\/strong\u003e by adding the DHI-HY-MRF50-R8 wireless module — enabling a hybrid system that links wired and wireless devices across a property.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e54-65°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eAlarm Trigger Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e85dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eAlarm Volume @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e9V\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eReplaceable Battery\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e24\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eMax Interconnected Units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eGrade D2\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eBS 5839-6 Classification\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eBS 5446-2\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eCompliance Standard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eGrade D2 — Familiar Replaceable Battery\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe HT5MB's \u003cstrong\u003ereplaceable 9V alkaline standby battery\u003c\/strong\u003e classifies it as a \u003cstrong\u003eGrade D2 device under BS 5839-6\u003c\/strong\u003e. This is widely specified in rental properties and retrofit installations, where a familiar, low-cost 9V battery is straightforward for landlords or occupants to source and replace as part of routine maintenance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eHeat Alarms, Not Smoke Alarms, for These Rooms\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eHeat alarms respond to a rise in ambient temperature rather than smoke particles, so they resist the false alarms that cooking fumes, steam and dust can trigger in a photoelectric smoke alarm. Fit heat alarms — not smoke alarms — in kitchens, garages and similar spaces, and always follow the room-by-room guidance in BS 5839-6 or your project specification.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eAnnual Battery Check Recommended\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eWith a typical \u003cstrong\u003ebattery life of around 1 year\u003c\/strong\u003e, the standby 9V alkaline cell should be checked and replaced as part of an annual maintenance visit, alongside the alarm's own test and silence function, to keep the unit operating correctly during a mains power interruption.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eReplaceable 9V Standby Battery\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA standard \u003cstrong\u003e9V alkaline battery\u003c\/strong\u003e provides backup power during mains interruptions and can be replaced by any competent person without specialist tools.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHigh-Precision Thermistor Sensor\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ethermistor-based heat sensor\u003c\/strong\u003e samples the surrounding air every 10 seconds and triggers at 54°C–65°C, avoiding the false alarms smoke detection can suffer from steam or cooking fumes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHardwired Interconnect, 24 Units\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eConnects to up to \u003cstrong\u003e24 other mains-powered Wisualarm smoke and heat alarms\u003c\/strong\u003e over standard interconnect wiring, so one triggered alarm sounds every linked unit in the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eOptional Wireless Expansion\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAdding the \u003cstrong\u003eDHI-HY-MRF50-R8\u003c\/strong\u003e module lets this alarm also communicate over the 868MHz WisuLink wireless mesh, bridging wired and wireless zones in the same system.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIR Remote Test \u0026amp; Silence\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eSupports \u003cstrong\u003etest and 9-minute silence functions via any working infrared remote control\u003c\/strong\u003e, letting installers and occupants manage the alarm from floor level rather than a ceiling-mounted button.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eThree-LED Status Reporting\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003etri-colour LED indicator\u003c\/strong\u003e reports standby, alarm and fault conditions at a glance, so a technician or occupant can read the alarm's state without opening the unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eProduct Identity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel number\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eDHI-HY-HT5MB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWisualarm (by Dahua)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBS 5839-6 Grade\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGrade D2\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eDetection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSensor type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThermistor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDetection class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eClass A1 — fixed temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm temperature range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e+54°C to +65°C (+129°F to +149°F)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSampling period\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10 s\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePrimary supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eAC 100V–250V, 50\/60Hz (mains)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby battery\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eReplaceable 9V alkaline battery\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBattery life\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eApprox. 1 year\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eAlarm Output\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm volume\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≥85dB(A) at 3 metres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm mode\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVisual and audible, continuous until reset\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSilencing\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYes — 9 minutes, including via IR remote\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIndicators\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGreen LED remains lit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eRed LED flashes once per second\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSensor fault\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYellow LED flashes twice per minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eLow battery backup fault\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYellow LED flashes once per minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eInterconnection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWired interconnect\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eUp to 24 hardwire interconnected units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWireless interconnect\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eUp to 24 units via optional DHI-HY-MRF50-R8 WisuLink module\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Environmental\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eØ148.6mm × H68.4mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e310 g\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eColour \/ casing\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWhite, PC+ABS\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eCeiling mount\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating environment\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIndoor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e-10°C to +55°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating humidity\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≤95% RH, non-condensing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eCertification\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCertifications\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eCE, UKCA, RCM, PSTI, BSI, Activfire\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompliance standard\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS 5446-2:2003, AS 1603.3:2018\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eShould I fit a heat alarm or a smoke alarm in my kitchen?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eA \u003cstrong\u003eheat alarm\u003c\/strong\u003e such as the HT5MB is the correct choice for kitchens, since cooking fumes and steam routinely trigger false alarms on smoke detectors. Always check the room-by-room detector guidance in BS 5839-6 or your project's fire strategy for the specific grade and category required.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow often does the backup battery need replacing?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe 9V alkaline standby battery has a typical life of around \u003cstrong\u003e1 year\u003c\/strong\u003e and should be checked and replaced as part of routine annual maintenance, so backup power remains available during any mains interruption.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow many alarms can be linked together?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eUp to \u003cstrong\u003e24 Wisualarm mains-powered smoke and heat alarms\u003c\/strong\u003e can be hardwired together on the interconnect line, so that any single alarm triggering sounds every linked unit in the property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this alarm work with wireless Wisualarm devices?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, if fitted with the optional \u003cstrong\u003eDHI-HY-MRF50-R8 wireless interconnect module\u003c\/strong\u003e, which lets the HT5MB join the 868MHz WisuLink mesh alongside battery-powered wireless alarms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat's the difference between the HT5MA and HT5MB?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eBoth are mains-powered Class A1 heat alarms with the same 54°C–65°C trigger range and 24-unit interconnect. The HT5MA uses a \u003cstrong\u003esealed 10-year rechargeable lithium battery\u003c\/strong\u003e (Grade D1), while the HT5MB uses a \u003cstrong\u003ereplaceable 9V alkaline battery\u003c\/strong\u003e (Grade D2).\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":63582299717981,"sku":"DHI-HY-HT5MB","price":27.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/wisualarm-hy-ht5mb-mains-powered-heat-alarm.webp?v=1771923819"},{"product_id":"drayton-wiser-smart-smoke-alarm-battery-cct599002-app-alerts-en14604-bs-5839-zigbee-wiser-smart-home","title":"Drayton Wiser Smart Battery Smoke Alarm | CCT599002 | Zigbee","description":"\u003c!-- SEO Product Name: Drayton Wiser Smart Battery Smoke Alarm | CCT599002 | Zigbee --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial,Helvetica,sans-serif;color:#222;line-height:1.6;\"\u003e\n\u003cp style=\"margin:0 0 14px 0;\"\u003eThe \u003cstrong\u003eDrayton Wiser Smart Smoke Alarm (CCT599002)\u003c\/strong\u003e is a \u003cstrong\u003ebattery-powered, photoelectric smoke alarm with a built-in heat sensor\u003c\/strong\u003e that joins your Wiser 2nd Generation system over \u003cstrong\u003eZigbee\u003c\/strong\u003e. When it detects smoke or a rapid rise in temperature it sounds an \u003cstrong\u003e85 dB alarm\u003c\/strong\u003e and sends an \u003cstrong\u003einstant alert to your phone through the Wiser Home app\u003c\/strong\u003e, so you know about a problem whether you are in the property or away from it.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px 0;\"\u003eThere is \u003cstrong\u003eno wiring to run\u003c\/strong\u003e: the alarm has a \u003cstrong\u003esealed lithium 3 V battery\u003c\/strong\u003e and fixes to a flat ceiling, inclined ceiling or wall with the supplied base. It is rated \u003cstrong\u003eEN 14604:2005+AC:2008\u003c\/strong\u003e and is specified as a \u003cstrong\u003eBS 5839 Grade F1 battery-operated smoke alarm\u003c\/strong\u003e. The local alarm works on its own, and with a Wiser 2nd Generation Hub you add \u003cstrong\u003eremote alerts, status monitoring, test from the app and alarm history\u003c\/strong\u003e, with \u003cstrong\u003eno subscription fee\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px 0;\"\u003eUp to \u003cstrong\u003e40 Wiser smoke alarms\u003c\/strong\u003e can be linked in one network, and they can be \u003cstrong\u003einterconnected over 868 MHz RF even without a Hub\u003c\/strong\u003e, so one alarm triggers the rest.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:22px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; text-align:center; background:#f1f8f7; border-top:4px solid #008377CF; border-radius:6px; padding:14px 8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e85 dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:2px;\"\u003eAlarm level at 3 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; text-align:center; background:#f1f8f7; border-top:4px solid #008377CF; border-radius:6px; padding:14px 8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003eZigbee 3.0\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:2px;\"\u003eCertified wireless\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; text-align:center; background:#f1f8f7; border-top:4px solid #008377CF; border-radius:6px; padding:14px 8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003eEN 14604\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:2px;\"\u003e2005 + AC:2008\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; text-align:center; background:#f1f8f7; border-top:4px solid #008377CF; border-radius:6px; padding:14px 8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003eGrade F1\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:2px;\"\u003eBS 5839 battery alarm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; text-align:center; background:#f1f8f7; border-top:4px solid #008377CF; border-radius:6px; padding:14px 8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e40 alarms\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:2px;\"\u003eMax per network\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; min-width:130px; text-align:center; background:#f1f8f7; border-top:4px solid #008377CF; border-radius:6px; padding:14px 8px;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF;\"\u003e10 years\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#444; margin-top:2px;\"\u003eReplace from manufacture date\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #b3261e; background:#fdf0ef; border-radius:6px; padding:14px 18px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#b3261e; margin-bottom:4px;\"\u003eSafety and replacement\u003c\/div\u003e\n\u003cdiv\u003eThe battery is \u003cstrong\u003esealed and non-replaceable\u003c\/strong\u003e. Do not recharge, open or burn the alarm. \u003cstrong\u003eTest it monthly\u003c\/strong\u003e by pressing the Test\/Hush button for more than 3 seconds (never with a naked flame), and \u003cstrong\u003ereplace the whole alarm 10 years after its manufacture date\u003c\/strong\u003e. If the low-battery beep starts, replace the alarm within 30 days.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #b26a00; background:#fff6e5; border-radius:6px; padding:14px 18px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#b26a00; margin-bottom:4px;\"\u003eHub required for smartphone alerts\u003c\/div\u003e\n\u003cdiv\u003ePhone notifications and Wiser Home app functions need a \u003cstrong\u003eWiser 2nd Generation Hub\u003c\/strong\u003e (sold separately). This alarm is for 2nd Generation systems only. Without a Hub it still sounds its \u003cstrong\u003elocal audible alarm\u003c\/strong\u003e and can be interconnected with other Wiser smoke alarms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #b26a00; background:#fff6e5; border-radius:6px; padding:14px 18px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#b26a00; margin-bottom:4px;\"\u003eWhere to fit it\u003c\/div\u003e\n\u003cdiv\u003eDo \u003cstrong\u003enot install in garages, kitchens, bathrooms\u003c\/strong\u003e or areas with high moisture, dirt or insects, and keep it \u003cstrong\u003emore than 1 m from air-conditioning or heater vents, fans\u003c\/strong\u003e and electrical sources. Leave the \u003cstrong\u003edust cover on until all building work is finished\u003c\/strong\u003e to avoid false alarms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #008377CF; background:#f1f8f7; border-radius:6px; padding:14px 18px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:4px;\"\u003eWorks standalone\u003c\/div\u003e\n\u003cdiv\u003eThe alarm sounds locally whether or not the Hub or internet is available. Zigbee connectivity adds \u003cstrong\u003eremote notification\u003c\/strong\u003e; it does not replace the local alarm.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; font-weight:700; color:#008377CF; margin:30px 0 12px 0; padding-bottom:6px; border-bottom:3px solid #008377CF;\"\u003eKey Features\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:16px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; border:1px solid #d6e6e4; border-left:6px solid #008377CF; border-radius:6px; padding:14px 16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eInstant app alerts\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eSmoke or heat detection triggers a \u003cstrong\u003epush notification in the Wiser Home app\u003c\/strong\u003e, giving you remote awareness at home or away.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; border:1px solid #d6e6e4; border-left:6px solid #008377CF; border-radius:6px; padding:14px 16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eSmoke and heat sensing\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eA \u003cstrong\u003ephotoelectric smoke sensor\u003c\/strong\u003e is paired with a \u003cstrong\u003etemperature sensor\u003c\/strong\u003e that responds to a rapid rise in heat. The alarm contains \u003cstrong\u003eno radioactive material\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; border:1px solid #d6e6e4; border-left:6px solid #008377CF; border-radius:6px; padding:14px 16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eSealed battery, no wiring\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003e\n\u003cstrong\u003eLithium 3 V sealed battery\u003c\/strong\u003e with no mains wiring needed. Screw-fix to the supplied base on a \u003cstrong\u003eflat ceiling, inclined ceiling or wall\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; border:1px solid #d6e6e4; border-left:6px solid #008377CF; border-radius:6px; padding:14px 16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eInterconnect without a Hub\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eLink up to \u003cstrong\u003e40 alarms over 868 MHz RF\u003c\/strong\u003e using the Primary label and a simple button sequence, so every alarm sounds together.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; border:1px solid #d6e6e4; border-left:6px solid #008377CF; border-radius:6px; padding:14px 16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eRemote status, test and history\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eFrom the app you can \u003cstrong\u003esilence the alarm, check device status, run tests from the Control Panel\u003c\/strong\u003e and view alarm history.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; min-width:240px; border:1px solid #d6e6e4; border-left:6px solid #008377CF; border-radius:6px; padding:14px 16px; background:#fff;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; font-size:17px; margin-bottom:6px;\"\u003eHush and alarm memory\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eA \u003cstrong\u003e10-minute hush\u003c\/strong\u003e silences nuisance alarms, and in an interconnected group the \u003cstrong\u003ealarm memory LED\u003c\/strong\u003e flags which unit was triggered for up to 72 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; font-weight:700; color:#008377CF; margin:30px 0 12px 0; padding-bottom:6px; border-bottom:3px solid #008377CF;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:6px; overflow:hidden; margin:16px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:9px 14px;\"\u003eProduct\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eDrayton by Schneider Electric\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eWiser Smoke Alarm - Battery\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003ePart number (MPN)\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eCCT599002\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eRange\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eWiser 2nd Generation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eColour\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eWhite\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eMobile app\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eWiser Home (iOS and Android)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:9px 14px;\"\u003eDetection and Alarm\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eSmoke sensing\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003ePhotoelectric\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eHeat sensing\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eTemperature sensor, responds to rapid temperature rise\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eAlarm level\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e85 dB at 3 m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eControls and indicators\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eTest\/Hush button, power switch, Setup\/Reset button, status LED (amber, green, red), standby LED (red)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eHush time\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e10 minutes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eBattery\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eLithium 3 V, sealed and non-replaceable\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eWiring\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eNone required\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eOperating current\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eLess than 70 mA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eService life\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eReplace the alarm 10 years after its manufacture date\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:9px 14px;\"\u003eWireless\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eSmart connectivity\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eZigbee 3.0 certified, 2405 to 2480 MHz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eInterconnection\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eRF 868 MHz, works without a Hub\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eMax alarms per network\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e40\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eWireless range\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e40 m indoors, line of sight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eHub requirement\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eAny Wiser 2nd Generation Hub (for app alerts)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:9px 14px;\"\u003ePhysical and Environmental\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eDimensions (H x W x D)\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e89 x 89 x 33.5 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eMounting\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eScrew fixing to base: flat ceiling, inclined ceiling or wall\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eIngress protection\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eIP20\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eOperating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e0 to 45 °C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eStorage temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e-20 to 60 °C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eAmbient humidity\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e5 to 95 % (non-condensing)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:9px 14px;\"\u003eStandards\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eSmoke alarm standard\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eEN 14604:2005+AC:2008\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eUK code of practice\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eBS 5839 battery-operated smoke alarm, Grade F1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eRadio\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eRadio Equipment Directive 2014\/53\/EU\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eOther directives\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003eRoHS 2011\/65\/EU, Batteries 2006\/66\/EC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#fff; font-weight:700; padding:9px 14px;\"\u003eWhat is in the Box\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#f1f8f7; border-bottom:1px solid #e0ecea; padding:8px 14px;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eSupplied\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 300px;\"\u003e1 x Wiser Smoke Alarm Battery, 1 x mounting base, 2 x screws (M3.5 x 20 mm), 2 x wall plugs, 1 x Primary label, 1 x installation instructions, 1 x dust cover\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:20px; font-weight:700; color:#008377CF; margin:30px 0 12px 0; padding-bottom:6px; border-bottom:3px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin:16px 0;\"\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eDoes the alarm still sound if I have no Hub or internet?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; background:#fff;\"\u003eYes. The \u003cstrong\u003elocal 85 dB alarm works independently\u003c\/strong\u003e. A Wiser 2nd Generation Hub is only needed for \u003cstrong\u003esmartphone notifications\u003c\/strong\u003e and Wiser Home app functions.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eIs it mains powered or battery powered?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; background:#fff;\"\u003eIt is \u003cstrong\u003ebattery powered\u003c\/strong\u003e with a \u003cstrong\u003esealed lithium 3 V battery\u003c\/strong\u003e, so no mains wiring is needed. The battery cannot be changed; when it runs low, \u003cstrong\u003ereplace the whole alarm\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eHow often should I test it and when should it be replaced?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; background:#fff;\"\u003e\n\u003cstrong\u003eTest monthly\u003c\/strong\u003e by pressing the Test\/Hush button for more than 3 seconds until the alarm sounds. In a mobile home, test weekly and before every journey. \u003cstrong\u003eReplace the alarm 10 years after its manufacture date\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eCan I link several alarms together?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; background:#fff;\"\u003eYes. Up to \u003cstrong\u003e40 Wiser smoke alarms\u003c\/strong\u003e can be linked in one network. They can also be \u003cstrong\u003einterconnected over RF without a Hub\u003c\/strong\u003e: mark one unit with the Primary label, then press Test\/Hush three times within 2 seconds on the primary and on each secondary unit while they are close together.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eHow do I silence a nuisance alarm?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; background:#fff;\"\u003eIdentify the unit with the blinking red LED and \u003cstrong\u003eshort-press Test\/Hush\u003c\/strong\u003e, or silence it from the Wiser Home app. The alarm is then \u003cstrong\u003einsensitive for 10 minutes\u003c\/strong\u003e before returning to normal. If it keeps alarming without smoke, clean it and refit it.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:6px; margin-bottom:10px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#fff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eWhere should I not fit it?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; background:#fff;\"\u003eAvoid \u003cstrong\u003egarages, kitchens, bathrooms\u003c\/strong\u003e and any damp, dusty or insect-prone area, and keep it \u003cstrong\u003emore than 1 m away from air-conditioning or heater vents and fans\u003c\/strong\u003e. Do not paint the alarm.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Drayton Controls","offers":[{"title":"Default Title","offer_id":63665830297949,"sku":"CCT599002","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/DraytonWiserSmartSmokeAlarmBatteryCCT599002.webp?v=1772355748"},{"product_id":"honeywell-home-r200h-n1-interconnected-heat-alarm-10-year-battery","title":"Honeywell Home R200H-N1 Interconnected Heat Alarm 10 Year Battery","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home R200H-N1\u003c\/strong\u003e is a \u003cstrong\u003eradio-interlinked heat alarm\u003c\/strong\u003e built for rooms where a smoke alarm would create persistent false alerts — kitchens, garages, utility rooms, and boiler cupboards. Rather than reacting to smoke particles, it monitors \u003cstrong\u003eair temperature\u003c\/strong\u003e and triggers when heat exceeds the rated threshold, making it ideal for environments with cooking fumes, steam, or occasional smoke. Powered by a \u003cstrong\u003esealed, tamper-proof 10‑year lithium battery\u003c\/strong\u003e that lasts the full service life of the unit, there is \u003cstrong\u003eno battery to change\u003c\/strong\u003e — ever. The built-in \u003cstrong\u003eradio-interlink (RF) module\u003c\/strong\u003e allows seamless wireless interconnection with up to 11 other compatible Honeywell Home R200 series alarms: when one activates, every linked alarm sounds simultaneously, ensuring whole-home awareness no matter where the hazard begins.\u003c\/p\u003e\n\n\u003c!-- STAT STRIP --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:140px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e10\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eYear battery \u0026amp; warranty\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:140px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e12\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarms interlinked (max)\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:140px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e85 dB\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarm sounder output\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:140px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eBS 5446‑2\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eKitemarked to :2003\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- RED CALLOUT – installation note --\u003e\n\u003cdiv style=\"background:#fff5f5;border-left:4px solid #c0392b;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Installation Note:\u003c\/strong\u003e The R200H-N1 contains a \u003cstrong\u003epermanently sealed, non-replaceable battery\u003c\/strong\u003e and has no user-serviceable parts. Any attempt to open the unit creates a risk of electric shock or malfunction. During building work involving dust or debris, remove the alarm from its bracket or fully cover the vents with brightly coloured tape — and remove the covering each day when work resumes.\n\u003c\/div\u003e\n\n\u003c!-- AMBER CALLOUT – placement guidance --\u003e\n\u003cdiv style=\"background:#fffbea;border-left:4px solid #e67e22;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#e67e22;\"\u003e⚠ Where Not to Install:\u003c\/strong\u003e Do not position close to air conditioning outlets, fans, or ventilation ducts where draughts could impair detection. The R200H-N1 is designed for rooms prone to dust or cooking fumes; use an \u003cstrong\u003eoptical smoke alarm\u003c\/strong\u003e (R200S-N1) in living areas, hallways, and bedrooms instead.\n\u003c\/div\u003e\n\n\u003c!-- TEAL CALLOUT – legislation --\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eℹ Legislation Compliance:\u003c\/strong\u003e The R200H-N1 meets the requirements of the \u003cstrong\u003e2022 fire alarm legislation\u003c\/strong\u003e for homes in England, Scotland, and Wales, and is suitable for use as part of a \u003cstrong\u003eBS 5839-6 Grade F1\u003c\/strong\u003e interlinked system.\n\u003c\/div\u003e\n\n\u003c!-- FEATURES GRID --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;padding:16px 0;\"\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eSealed 10-Year Lithium Battery\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eA \u003cstrong\u003etamper-proof, non-replaceable\u003c\/strong\u003e lithium battery powers the alarm for its entire 10-year service life. There is no need for annual battery changes, and the end-of-life signal alerts you when replacement is due — making it ideal for landlords and rental properties where maintenance visits need to be minimised.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eRadio Interlink — Up to 12 Alarms\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe built-in \u003cstrong\u003eRF radio module\u003c\/strong\u003e allows wireless interconnection with up to 11 additional compatible Honeywell Home R200 series alarms (smoke, CO, and heat) without any wiring. When one alarm detects a hazard, \u003cstrong\u003eall linked alarms sound simultaneously\u003c\/strong\u003e, ensuring occupants are warned throughout the entire property.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eHeat Sensor — Ideal for Kitchens \u0026amp; Garages\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eUnlike optical smoke alarms, the R200H-N1 uses a \u003cstrong\u003ethermistor-based heat sensor\u003c\/strong\u003e that responds to rising temperature rather than airborne particles. This makes it perfectly suited to \u003cstrong\u003ekitchens, garages, boiler rooms, and utility spaces\u003c\/strong\u003e where cooking fumes or steam would trigger nuisance alarms from a conventional smoke detector.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eAlarm Memory \u0026amp; Auto Self-Test\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eAn \u003cstrong\u003ealarm memory function\u003c\/strong\u003e provides a visual LED indication of any previous alarm activation — useful when the alarm has triggered while nobody was home. The unit also \u003cstrong\u003eautomatically self-tests\u003c\/strong\u003e its sensor and electronics periodically to detect faults, and will indicate any problem with a clearly distinguishable audible fault tone.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eUltra-Slim \u0026amp; Discreet Design\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003eultra-slim, compact profile\u003c\/strong\u003e keeps the alarm low-profile on ceiling or wall. The entire front face of the unit acts as a single large \u003cstrong\u003etest\/silence button\u003c\/strong\u003e — no hunting for a small recess button. The \u003cstrong\u003e85 dB sounder\u003c\/strong\u003e ensures the alarm can be heard throughout a typical home when activated.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eHush Mode \u0026amp; Do-Not-Disturb\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eIn the event of a non-hazardous false activation, the sounder can be \u003cstrong\u003esilenced for up to 10 minutes\u003c\/strong\u003e with a single press. Fault tones can be muted for \u003cstrong\u003eup to 9 hours\u003c\/strong\u003e to avoid nuisance noise while the cause is investigated. A \u003cstrong\u003edo-not-disturb night mode\u003c\/strong\u003e further reduces unnecessary interruptions overnight.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- SPEC TABLE --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eR200H-N1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eInterconnected Heat Alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSensor Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eThermistor (fixed temperature heat sensor)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003ePower Source\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eSealed 10-year lithium battery (non-replaceable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Sound Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e85 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eInterconnect Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eRadio Frequency (RF) wireless interlink\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eMax Interconnected Alarms\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e12 (this unit + 11 others)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eHush Duration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eUp to 10 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eFault Silence Duration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eUp to 9 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eNormal Mode LED Flash\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e1× every 48 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e10 years (manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eCertifications \/ Standards\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCE, UKCA, BSI Kitemark, BS 5446-2:2003, EN 14604:2005+AC:2008, EN 62368-1:2014, VdS, NF, SBSC, Q Label, B-Mark\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSuitable System Grade\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eBS 5839-6 Grade F1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eLegislation Compliance\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e2022 England, Scotland \u0026amp; Wales fire alarm home legislation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCeiling or wall mount; bayonet bracket fixing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eColour\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhy choose a heat alarm rather than a smoke alarm for a kitchen?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eOptical smoke alarms respond to airborne particles — including cooking smoke, steam, and toast fumes — which frequently causes \u003cstrong\u003enuisance alarms\u003c\/strong\u003e in kitchens. The R200H-N1 uses a \u003cstrong\u003ethermistor heat sensor\u003c\/strong\u003e that only activates when air temperature rises to a dangerous level, eliminating false triggers while still providing reliable fire detection in cooking environments. It is also suitable for garages and boiler rooms for the same reason.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eHow does radio interlink work — does it need any wiring?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eNo wiring is needed. The \u003cstrong\u003eRF radio module\u003c\/strong\u003e built into the R200H-N1 communicates wirelessly with up to 11 other compatible Honeywell Home R200 series alarms (smoke, CO, and heat models). Once paired, if any one alarm detects a hazard, \u003cstrong\u003eall linked alarms activate simultaneously\u003c\/strong\u003e. This creates a whole-home warning system without the cost and disruption of mains-wired interconnection.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eDoes the battery really last 10 years without replacement?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The R200H-N1 uses a \u003cstrong\u003esealed, tamper-proof lithium battery pack\u003c\/strong\u003e engineered alongside a low-power electronics chip to sustain the alarm for its entire 10-year rated service life. There is no battery compartment — the battery is permanently integrated. When the unit reaches end of life, it emits a distinct \u003cstrong\u003eend-of-life warning signal\u003c\/strong\u003e, indicating the whole alarm unit needs replacing. The 10-year battery life is covered by the manufacturer warranty.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eIs the R200H-N1 compliant with the 2022 UK legislation for homes?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The alarm meets the requirements of the \u003cstrong\u003e2022 fire alarm legislation\u003c\/strong\u003e applicable to homes in England (Smoke and Carbon Monoxide Alarm Regulations 2022), Scotland (Technical Handbook 2022), and Wales. It is suitable for use as part of a \u003cstrong\u003eBS 5839-6 Grade F1\u003c\/strong\u003e interlinked system and is \u003cstrong\u003eBSI Kitemarked\u003c\/strong\u003e to BS 5446-2:2003.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan I mix R200H-N1 with R200S-N1 smoke and R200C-N1 CO alarms in the same interlinked system?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The Honeywell Home R200 series is designed as a unified interconnected family. The R200H-N1 heat alarm, R200S-N1 smoke alarm, and R200C-N1 CO alarm all share the same \u003cstrong\u003eRF interlink protocol\u003c\/strong\u003e, allowing you to mix and match up to 12 units in a single linked system. This makes it straightforward to build a \u003cstrong\u003ewhole-home Grade F1 system\u003c\/strong\u003e covering every room with the appropriate detector type.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":64703124701533,"sku":"R200H-N1","price":29.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeR200H-N1InterconnectedHeatAlarm10YearBattery.webp?v=1778851279"},{"product_id":"honeywell-home-r200c-1-stand-alone-carbon-monoxide-alarm-10-year-battery","title":"Honeywell Home R200C-1 Stand-Alone Carbon Monoxide Alarm 10 Year Battery","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home R200C-1\u003c\/strong\u003e is a \u003cstrong\u003estand-alone carbon monoxide (CO) alarm\u003c\/strong\u003e built for straightforward, no-fuss protection in any room containing a fuel-burning appliance. Powered by a \u003cstrong\u003esealed 10-year lithium battery\u003c\/strong\u003e with a matching \u003cstrong\u003e10-year electrochemical CO sensor\u003c\/strong\u003e, the unit is entirely maintenance-free for a decade — no battery changes, no sensor swaps. Its \u003cstrong\u003esuper-slim 25 mm depth\u003c\/strong\u003e makes it one of the most discreet CO alarms on the market, and the entire front face serves as a large, easy-to-press \u003cstrong\u003etest\/silence button\u003c\/strong\u003e. A bright red flashing \u003cstrong\u003e\"ALARM\" text display\u003c\/strong\u003e, rated \u003cstrong\u003e85 dB sounder\u003c\/strong\u003e, auto-dimming green power LED, \u003cstrong\u003eIP44-rated housing\u003c\/strong\u003e, and \u003cstrong\u003e48-hour alarm memory\u003c\/strong\u003e round out a feature set that comfortably satisfies landlord compliance requirements and the 2022 UK CO alarm regulations.\u003c\/p\u003e\n\n\u003c!-- STAT STRIP --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e10\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eYear battery \u0026amp; sensor life\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e85 dB\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarm sounder\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e25 mm\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eSlim depth profile\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eIP44\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eIngress protection\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-width:700;font-weight:700;\"\u003e48 hr\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarm memory\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- TEAL CALLOUT – legislation --\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eℹ CO Alarm Regulations 2022:\u003c\/strong\u003e UK law requires CO alarms to be fitted in rooms containing a \u003cstrong\u003efixed combustion appliance\u003c\/strong\u003e (boiler, gas fire, log burner, etc.). The R200C-1 is \u003cstrong\u003eBSI Kitemarked to BS EN 50291-1\u003c\/strong\u003e and meets the 2022 England, Scotland, and Wales legislation requirements for CO alarm installation.\n\u003c\/div\u003e\n\n\u003c!-- RED CALLOUT – CO safety --\u003e\n\u003cdiv style=\"background:#fff5f5;border-left:4px solid #c0392b;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Carbon Monoxide is Invisible and Odourless:\u003c\/strong\u003e CO cannot be seen, smelled, or tasted. Symptoms of exposure include headaches, nausea, and dizziness — and at high concentrations it is fatal. \u003cstrong\u003eDo not rely on physical symptoms alone\u003c\/strong\u003e. If this alarm sounds and you have not pressed the test button, evacuate the premises immediately and call the Gas Emergency number: \u003cstrong\u003e0800 111 999\u003c\/strong\u003e.\n\u003c\/div\u003e\n\n\u003c!-- AMBER CALLOUT – placement --\u003e\n\u003cdiv style=\"background:#fffbea;border-left:4px solid #e67e22;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#e67e22;\"\u003e⚠ Placement Guidance:\u003c\/strong\u003e Install in every room containing a \u003cstrong\u003efuel-burning appliance\u003c\/strong\u003e and in any room where occupants spend significant time (bedroom, living room). If a partition divides the room, position the alarm on the \u003cstrong\u003esame side as the potential CO source\u003c\/strong\u003e. CO is slightly lighter than air — mount at \u003cstrong\u003ehead height or above\u003c\/strong\u003e, ideally on the ceiling or high on a wall.\n\u003c\/div\u003e\n\n\u003c!-- FEATURES GRID --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;padding:16px 0;\"\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e10-Year Sealed Lithium Battery\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eA \u003cstrong\u003epermanently sealed, non-replaceable lithium battery\u003c\/strong\u003e powers the alarm for its full 10-year service life. A dedicated low-power chip conserves energy in standby mode to ensure the battery lasts the rated lifespan without any maintenance. An \u003cstrong\u003eend-of-life signal\u003c\/strong\u003e alerts you when the unit needs replacing.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e10-Year Electrochemical CO Sensor\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003eelectrochemical CO sensor\u003c\/strong\u003e is rated for the same 10-year service life as the battery, meaning \u003cstrong\u003eno mid-life sensor replacement\u003c\/strong\u003e is required. Detection accuracy is maintained throughout the unit's lifespan, and the sensor responds appropriately at the threshold concentrations defined by BS EN 50291-1.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eVisual ALARM Display \u0026amp; 85 dB Sounder\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eWhen CO is detected, a bright red \u003cstrong\u003e\"ALARM\" text flashes\u003c\/strong\u003e on the front face alongside the \u003cstrong\u003e85 dB sounder\u003c\/strong\u003e, providing both visual and audible alerts. The visual indicator makes this alarm particularly suitable for \u003cstrong\u003ehouseholds with hard-of-hearing occupants\u003c\/strong\u003e. The green power LED automatically dims at night to avoid disturbing sleep.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e48-Hour Alarm Memory\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003ealarm memory stores alert status for 48 hours\u003c\/strong\u003e, so you can check whether CO was detected while you were out or asleep. This feature is especially valuable in rental properties and second homes where occupancy is intermittent, providing evidence of a CO event even after the alarm has reset.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eIP44 Rating — Splash \u0026amp; Dust Proof\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eAn \u003cstrong\u003eIP44 ingress protection\u003c\/strong\u003e rating makes the R200C-1 resistant to dust intrusion and water splashes from any direction. This means it can be safely installed in \u003cstrong\u003ebathrooms, conservatories, utility rooms, and other damp-prone areas\u003c\/strong\u003e — an advantage over many basic CO alarms with no IP rating.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eSuper-Slim Design — Only 25 mm Deep\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eAt just \u003cstrong\u003e25 mm depth\u003c\/strong\u003e, the R200C-1 is among the slimmest domestic CO alarms available. The \u003cstrong\u003eentire front surface acts as a test\/silence button\u003c\/strong\u003e, removing the need for a small recessed button and making weekly testing straightforward. The tamper-proof design also meets landlord compliance requirements under current legislation.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- SPEC TABLE --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eR200C-1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eStand-Alone Carbon Monoxide (CO) Alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSensor Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eElectrochemical CO sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSensor Life\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003ePower Source\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eSealed 10-year lithium battery (non-replaceable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Sound Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e85 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eInterconnect\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eStand-alone (no interlink)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eDepth\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eIngress Protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eIP44\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Memory\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e48 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eFault Silence Duration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eUp to 9 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eVisual Alert\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eFlashing red \"ALARM\" text display\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003ePower Indicator\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eAuto-dimming green LED\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e10 years (manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eCertifications \/ Standards\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCE, UKCA, BSI Kitemark, BS EN 50291-1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eLegislation Compliance\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e2022 England, Scotland \u0026amp; Wales CO alarm home legislation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eWall or ceiling mount\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eColour\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhere should I install a CO alarm in my home?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eInstall a CO alarm in \u003cstrong\u003eevery room containing a fixed combustion appliance\u003c\/strong\u003e — boilers, gas fires, log burners, and similar. Also fit one in bedrooms or rooms where occupants spend significant time, since CO poisoning often occurs during sleep. Ideally, mount at \u003cstrong\u003ehead height or above\u003c\/strong\u003e on a ceiling or high wall. Avoid placing near open windows, draughts, or directly above an appliance.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eDoes the R200C-1 need a battery change during its 10-year life?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eNo. The R200C-1 has a \u003cstrong\u003epermanently sealed, non-replaceable lithium battery\u003c\/strong\u003e designed to power the alarm for the full 10-year service life. At end of life, the unit emits a distinct warning signal indicating the \u003cstrong\u003eentire alarm must be replaced\u003c\/strong\u003e — there is no battery compartment or sensor to service. This makes the alarm fully compliant with landlord requirements for low-maintenance, tamper-proof CO detection.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhat should I do if the R200C-1 alarm sounds?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eIf the alarm activates and you have not pressed the test button: \u003cstrong\u003edo not ignore it\u003c\/strong\u003e. Immediately move all occupants and pets to fresh air outside the property. Do not re-enter the building. Call the \u003cstrong\u003eNational Gas Emergency Service on 0800 111 999\u003c\/strong\u003e (24 hours). Only return once the property has been ventilated and checked by a qualified engineer. Do not attempt to locate the CO source yourself.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan the R200C-1 be installed in a bathroom or damp room?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The R200C-1 carries an \u003cstrong\u003eIP44 ingress protection rating\u003c\/strong\u003e, meaning it is sealed against dust ingress and protected against water splashes from all directions. This makes it safe for installation in \u003cstrong\u003ebathrooms, conservatories, utility rooms, and similar damp or humid environments\u003c\/strong\u003e — a significant advantage over standard CO alarms with no IP rating.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eIs the R200C-1 suitable for landlord compliance under UK law?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022 require landlords in England to install a CO alarm in any room with a fixed combustion appliance. The R200C-1's \u003cstrong\u003etamper-proof sealed battery\u003c\/strong\u003e, \u003cstrong\u003eBSI Kitemark certification to BS EN 50291-1\u003c\/strong\u003e, and 10-year service life make it an ideal choice for rental property compliance. Its 48-hour alarm memory also provides a record of any CO event between tenancy inspections.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":64703161303389,"sku":"R200C-1","price":29.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeR200C-1StandAloneCarbonMonoxide_CO_Alarm.webp?v=1778851678"},{"product_id":"honeywell-home-r200s-1-stand-alone-optical-smoke-alarm-10-year-battery","title":"Honeywell Home R200S-1 Stand-Alone Optical Smoke Alarm 10 Year Battery","description":"\u003c!-- SEO Product Name: Honeywell Home R200S-1 Stand-Alone Optical Smoke Alarm 10 Year Battery --\u003e\n\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home R200S-1\u003c\/strong\u003e is a \u003cstrong\u003estand-alone optical smoke alarm\u003c\/strong\u003e with a \u003cstrong\u003esealed 10-year lithium battery\u003c\/strong\u003e — designed to deliver a decade of reliable fire detection with zero maintenance. Its \u003cstrong\u003eoptical (photoelectric) sensor\u003c\/strong\u003e is highly effective at detecting \u003cstrong\u003eslow-burning, smouldering fires\u003c\/strong\u003e, the type most likely to develop undetected in living rooms, bedrooms, and hallways during the night. The ultra-slim body, large front-face test\/silence button, and automatic self-testing electronics make the R200S-1 a practical choice for homeowners, social housing, and landlords looking for a low-complexity, high-reliability smoke alarm that meets the \u003cstrong\u003e2022 UK fire alarm legislation\u003c\/strong\u003e for homes.\u003c\/p\u003e\n\n\u003c!-- STAT STRIP --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e10\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eYear sealed battery \u0026amp; warranty\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e85 dB\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarm sounder\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eOptical\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003ePhotoelectric sensor\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e10 min\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eHush silence duration\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- TEAL CALLOUT – legislation --\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eℹ Legislation Compliance:\u003c\/strong\u003e The R200S-1 meets the \u003cstrong\u003e2022 UK fire alarm legislation\u003c\/strong\u003e for homes in England, Scotland, and Wales. It is \u003cstrong\u003eBSI Kitemarked to EN 14604:2005\u003c\/strong\u003e and CE and UKCA marked.\n\u003c\/div\u003e\n\n\u003c!-- AMBER CALLOUT – placement --\u003e\n\u003cdiv style=\"background:#fffbea;border-left:4px solid #e67e22;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#e67e22;\"\u003e⚠ Not Suitable for Kitchens or Garages:\u003c\/strong\u003e Optical smoke alarms should not be installed in areas with regular cooking fumes, steam, or vehicle exhaust. For kitchens, utility rooms, and garages, use the \u003cstrong\u003eHoneywell Home R200H-N1 heat alarm\u003c\/strong\u003e instead, which detects dangerous temperature rises rather than airborne particles.\n\u003c\/div\u003e\n\n\u003c!-- FEATURES GRID --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;padding:16px 0;\"\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eOptical (Photoelectric) Smoke Sensor\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe R200S-1 uses an \u003cstrong\u003eoptical photoelectric sensor\u003c\/strong\u003e that detects changes in light scattering caused by smoke particles. This technology is particularly sensitive to \u003cstrong\u003eslow-smouldering fires\u003c\/strong\u003e — the type that produce large quantities of smoke before flames develop — making it well-suited to living rooms, bedrooms, and hallways where this fire type is most prevalent.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e10-Year Sealed Lithium Battery\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eA \u003cstrong\u003etamper-proof, sealed-for-life lithium battery\u003c\/strong\u003e powers the alarm for its entire 10-year service life without any battery replacement. The low-power chip maximises battery efficiency in standby mode. An \u003cstrong\u003eend-of-life signal\u003c\/strong\u003e clearly alerts you when the full unit needs replacing, preventing any gap in protection.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eAutomatic Self-Testing Electronics\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe R200S-1 \u003cstrong\u003eautomatically tests its sensor and electronics\u003c\/strong\u003e on a periodic basis to identify any fault conditions without requiring manual intervention. If a fault is detected, a \u003cstrong\u003eclearly distinguishable audible fault tone\u003c\/strong\u003e sounds to alert the occupant, and fault tones can be \u003cstrong\u003esilenced for up to 9 hours\u003c\/strong\u003e while the issue is investigated.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e85 dB Sounder \u0026amp; 10-Minute Hush\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003e85 dB high-output sounder\u003c\/strong\u003e ensures the alarm can be heard clearly throughout a typical home. In the event of a nuisance activation — for example, from toast smoke drifting from a nearby kitchen — the entire front face of the alarm functions as a button to \u003cstrong\u003esilence the sounder for up to 10 minutes\u003c\/strong\u003e, giving time for the air to clear without disabling the alarm entirely.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eUltra-Slim \u0026amp; Easy to Install\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003eultra-thin, compact body\u003c\/strong\u003e minimises visual impact on ceilings and walls, making it one of the most discreet battery smoke alarms available. Installation uses a simple \u003cstrong\u003ebayonet bracket system\u003c\/strong\u003e that attaches to ceiling or wall with minimal tools. The stand-alone design means no wiring or interconnection is needed for a basic installation.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e10-Year Manufacturer Warranty\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eHoneywell (Resideo) back the R200S-1 with a full \u003cstrong\u003e10-year manufacturer warranty\u003c\/strong\u003e, matching the designed service life of the unit. The alarm is \u003cstrong\u003eBSI Kitemarked to EN 14604:2005+AC:2008\u003c\/strong\u003e, CE and UKCA marked, and meets the requirements of the 2022 UK fire alarm legislation for homes, making it suitable for both owner-occupied and rental properties.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- SPEC TABLE --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eR200S-1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eStand-Alone Optical Smoke Alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSensor Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eOptical (photoelectric) smoke sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003ePower Source\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eSealed 10-year lithium battery (non-replaceable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Sound Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e85 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eInterconnect\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eStand-alone (no interlink)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eHush Duration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eUp to 10 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eFault Silence Duration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eUp to 9 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSelf-Test\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eAutomatic periodic self-test (sensor \u0026amp; electronics)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e10 years (manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eCertifications \/ Standards\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCE, UKCA, BSI Kitemark, EN 14604:2005+AC:2008\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eLegislation Compliance\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e2022 England, Scotland \u0026amp; Wales fire alarm home legislation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCeiling or wall mount; bayonet bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eColour\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhat is the difference between an optical and an ionisation smoke alarm?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003e\n\u003cstrong\u003eOptical (photoelectric) alarms\u003c\/strong\u003e use an infrared light beam and detect smoke when particles scatter the beam — they are most effective at detecting \u003cstrong\u003eslow-smouldering, low-heat fires\u003c\/strong\u003e that produce large smoke particles (e.g. burning upholstery or electrical faults). \u003cstrong\u003eIonisation alarms\u003c\/strong\u003e use a small radioactive source and respond faster to \u003cstrong\u003efast-flaming fires\u003c\/strong\u003e with smaller particles. For living areas and bedrooms, optical alarms are generally preferred as they are less prone to nuisance alarms from cooking fumes.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhere should I install the R200S-1 in my home?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eInstall at least one smoke alarm on \u003cstrong\u003eevery floor\u003c\/strong\u003e of the home, ideally in the \u003cstrong\u003ehallway and landing\u003c\/strong\u003e to protect escape routes. Additional alarms in \u003cstrong\u003eliving rooms and bedrooms\u003c\/strong\u003e provide enhanced protection. Mount on the \u003cstrong\u003eceiling\u003c\/strong\u003e, as close to the centre of the room as practical, at least 30 cm from any wall or light fitting. \u003cstrong\u003eDo not install in kitchens or garages\u003c\/strong\u003e — use the R200H-N1 heat alarm there instead.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan the R200S-1 be interconnected with other alarms?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eNo — the R200S-1 is a \u003cstrong\u003estand-alone alarm\u003c\/strong\u003e without an interlink module. If you need wireless interconnection between multiple alarms so that they all sound together when one triggers, choose the \u003cstrong\u003eR200S-N1\u003c\/strong\u003e, which features the same optical sensor and sealed battery but adds a \u003cstrong\u003ebuilt-in RF radio interlink module\u003c\/strong\u003e compatible with the full Honeywell Home R200 series.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhat does the hush function do, and is it safe to use?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eThe \u003cstrong\u003ehush (silence) function\u003c\/strong\u003e mutes the sounder for up to \u003cstrong\u003e10 minutes\u003c\/strong\u003e without disabling the alarm's detection capability. It is intended for use when the alarm has been triggered by a non-hazardous source (e.g. toast smoke or steam drifting from another room). The alarm \u003cstrong\u003econtinues monitoring throughout the hush period\u003c\/strong\u003e and will immediately re-activate if smoke levels remain high or increase. It is not a substitute for identifying and eliminating the cause of the activation.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":64703281463645,"sku":"R200S-1","price":29.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeR200S-1StandAloneSmokeAlarm.webp?v=1778851908"},{"product_id":"honeywell-home-r200s-n1-interconnected-optical-smoke-alarm-10-year-battery-radio-interlink","title":"Honeywell Home R200S-N1 Interconnected Optical Smoke Alarm 10 Year Battery Radio Interlink","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home R200S-N1\u003c\/strong\u003e is a \u003cstrong\u003eradio-interlinked optical smoke alarm\u003c\/strong\u003e combining a \u003cstrong\u003esealed 10-year lithium battery\u003c\/strong\u003e with a built-in \u003cstrong\u003eRF wireless interlink module\u003c\/strong\u003e — the key upgrade over the stand-alone R200S-1. Once paired with other compatible Honeywell Home R200 series alarms, a hazard detected by \u003cstrong\u003eany single unit triggers all connected alarms simultaneously\u003c\/strong\u003e, creating a fully synchronised warning system across your entire property without a single cable. With coverage for up to \u003cstrong\u003e12 alarms in one network\u003c\/strong\u003e (including smoke, heat, and CO models), the R200S-N1 is the foundation of a compliant \u003cstrong\u003eBS 5839-6 Grade F1\u003c\/strong\u003e interlinked fire and CO system. It meets the 2022 England, Scotland, and Wales fire alarm legislation for homes and carries \u003cstrong\u003eBSI Kitemark certification to EN 14604:2005\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003c!-- STAT STRIP --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e10\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eYear battery \u0026amp; warranty\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e12\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarms interlinked (max)\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e85 dB\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarm sounder\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eGrade F1\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eBS 5839-6 compliant\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- TEAL CALLOUT – legislation --\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eℹ Legislation \u0026amp; Standards:\u003c\/strong\u003e Suitable for use as part of a \u003cstrong\u003eBS 5839-6 Grade F1\u003c\/strong\u003e interlinked system. Meets the requirements of the \u003cstrong\u003e2022 fire alarm legislation\u003c\/strong\u003e for homes in England, Scotland, and Wales. \u003cstrong\u003eBSI Kitemarked to EN 14604:2005+AC:2008\u003c\/strong\u003e, CE and UKCA marked.\n\u003c\/div\u003e\n\n\u003c!-- AMBER CALLOUT – placement --\u003e\n\u003cdiv style=\"background:#fffbea;border-left:4px solid #e67e22;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#e67e22;\"\u003e⚠ Not for Kitchens or Garages:\u003c\/strong\u003e Do not install optical smoke alarms in areas where cooking fumes, steam, or vehicle exhaust are regularly present. For these locations, use the \u003cstrong\u003eHoneywell Home R200H-N1 heat alarm\u003c\/strong\u003e, which is fully compatible with the R200S-N1 in the same interlinked network.\n\u003c\/div\u003e\n\n\u003c!-- FEATURES GRID --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;padding:16px 0;\"\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eRadio Interlink — Up to 12 Alarms, No Wiring\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe built-in \u003cstrong\u003eRF radio interlink module\u003c\/strong\u003e connects wirelessly with up to 11 additional compatible Honeywell Home R200 series alarms — mix smoke, heat, and CO units freely. When any alarm in the network triggers, \u003cstrong\u003eall connected alarms sound simultaneously\u003c\/strong\u003e, ensuring occupants on every floor and in every room receive the warning immediately.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eOptical Smoke Sensor — Smouldering Fire Detection\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003eoptical (photoelectric) sensor\u003c\/strong\u003e detects the large smoke particles produced by \u003cstrong\u003eslow-smouldering fires\u003c\/strong\u003e — the most common type in domestic settings (burning upholstery, overheating electrical equipment). This sensor type produces fewer nuisance alarms than ionisation types and is the preferred choice for living rooms, bedrooms, hallways, and landings.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eSealed 10-Year Lithium Battery\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003etamper-proof, sealed-for-life lithium battery\u003c\/strong\u003e powers the alarm for the entire 10-year service life, assisted by a low-power standby chip. There are \u003cstrong\u003eno battery changes required\u003c\/strong\u003e, and the alarm signals end of life with a distinct tone. The tamper-proof design also satisfies landlord compliance requirements under current UK legislation.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eAuto Self-Test \u0026amp; Clear Fault Indication\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe R200S-N1 \u003cstrong\u003eautomatically self-tests its sensor and electronics\u003c\/strong\u003e periodically, without user action. Any identified fault is clearly indicated by a \u003cstrong\u003edistinguishable audible fault tone\u003c\/strong\u003e separate from the alarm tone. Fault tones can be \u003cstrong\u003esilenced for up to 9 hours\u003c\/strong\u003e while investigating and resolving the issue, reducing nuisance noise.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e85 dB Sounder \u0026amp; 10-Minute Hush\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eA \u003cstrong\u003ehigh-output 85 dB sounder\u003c\/strong\u003e ensures the alarm signal is audible throughout the property. The \u003cstrong\u003e10-minute hush function\u003c\/strong\u003e — activated by pressing anywhere on the front face — silences the sounder without disabling detection, allowing time for non-hazardous smoke to disperse. Detection continues throughout the hush period.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eUltra-Slim, Discreet Profile\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003eultra-slim body\u003c\/strong\u003e sits close to the ceiling surface, minimising visual impact. The large front face also serves as the \u003cstrong\u003etest\/silence button\u003c\/strong\u003e, making routine weekly testing straightforward. Compatible with the full Honeywell Home R200 range for a unified, consistent appearance throughout the property when mixing alarm types.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- SPEC TABLE --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eR200S-N1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eInterconnected Optical Smoke Alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSensor Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eOptical (photoelectric) smoke sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003ePower Source\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eSealed 10-year lithium battery (non-replaceable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Sound Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e85 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eInterconnect Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eRadio Frequency (RF) wireless interlink\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eMax Interconnected Alarms\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e12 (this unit + 11 others)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eCompatible Alarm Types\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eR200 series smoke, heat, and CO alarms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eHush Duration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eUp to 10 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eFault Silence Duration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eUp to 9 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSelf-Test\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eAutomatic periodic self-test (sensor \u0026amp; electronics)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e10 years (manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eCertifications \/ Standards\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCE, UKCA, BSI Kitemark, EN 14604:2005+AC:2008, VdS, NF, SBSC, Q Label, B-Mark\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSuitable System Grade\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eBS 5839-6 Grade F1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eLegislation Compliance\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e2022 England, Scotland \u0026amp; Wales fire alarm home legislation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCeiling or wall mount; bayonet bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eColour\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhat is the difference between the R200S-1 and the R200S-N1?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eBoth models share the same \u003cstrong\u003eoptical sensor, sealed 10-year battery, 85 dB sounder, and ultra-slim design\u003c\/strong\u003e. The key difference is that the \u003cstrong\u003eR200S-N1 includes a built-in RF radio interlink module\u003c\/strong\u003e, allowing it to be wirelessly paired with up to 11 other compatible R200 series alarms. The \u003cstrong\u003eR200S-1 is stand-alone\u003c\/strong\u003e and does not interlink. If you need a whole-home system where all alarms sound together, choose the R200S-N1.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan I mix R200S-N1 smoke alarms with R200H-N1 heat alarms and R200C-N1 CO alarms in one system?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The Honeywell Home R200 series is a \u003cstrong\u003eunified interlinked family\u003c\/strong\u003e. The R200S-N1 (smoke), R200H-N1 (heat), and R200C-N1 (CO) all use the same \u003cstrong\u003eRF interlink protocol\u003c\/strong\u003e and can be mixed in a single network of up to 12 units. This allows you to install the most appropriate detector type for each location — smoke alarms in living areas and bedrooms, heat alarms in kitchens, and CO alarms near fuel-burning appliances — all connected as one system.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eHow do I interconnect multiple R200S-N1 alarms?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eInterconnection is straightforward and requires no tools or specialist knowledge. Each alarm is \u003cstrong\u003epaired wirelessly using a simple button sequence\u003c\/strong\u003e described in the installation manual. Once paired, the alarms remain linked and communicate automatically — there is no hub, bridge, or app required. The interlink operates on a dedicated radio frequency, separate from Wi-Fi or Bluetooth, for reliable, independent operation.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eDoes this alarm meet the Scottish Government's fire alarm requirements?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. Since February 2022, Scotland requires all homes to have \u003cstrong\u003einterlinked smoke and heat alarms\u003c\/strong\u003e — and the R200S-N1 is specifically designed to meet this requirement. It is suitable for use as part of a \u003cstrong\u003eBS 5839-6 Grade F1 interlinked system\u003c\/strong\u003e and meets the 2022 Scotland Technical Handbook standards. Combined with the R200H-N1 heat alarm (for kitchens) and R200C-N1 CO alarm (for rooms with fuel-burning appliances), the R200 series covers the full Scottish requirement in a single compatible product family.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eIs the R200S-N1 suitable for landlords and rental properties?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The \u003cstrong\u003etamper-proof sealed battery\u003c\/strong\u003e eliminates the risk of tenants removing batteries, the \u003cstrong\u003eBSI Kitemark certification\u003c\/strong\u003e satisfies legislative requirements, and the \u003cstrong\u003e10-year service life\u003c\/strong\u003e minimises ongoing maintenance visits. The automatic self-testing function ensures the alarm remains operational between tenancy inspections without requiring manual testing by the landlord. The alarm complies with the \u003cstrong\u003eSmoke and Carbon Monoxide Alarm (Amendment) Regulations 2022\u003c\/strong\u003e for rental properties in England.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":64703311348061,"sku":"R200S-N1","price":37.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeR200S-N1InterconnectedSmokeAlarm.webp?v=1778852081"},{"product_id":"honeywell-home-r200c-n1-interconnected-carbon-monoxide-alarm-10-year-battery-radio-interlink","title":"Honeywell Home R200C-N1 Interconnected Carbon Monoxide Alarm 10 Year Battery Radio Interlink","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home R200C-N1\u003c\/strong\u003e is a \u003cstrong\u003eradio-interlinked carbon monoxide (CO) alarm\u003c\/strong\u003e that adds wireless network capability to the proven CO detection of the stand-alone R200C-1. Powered by a \u003cstrong\u003esealed 10-year lithium battery\u003c\/strong\u003e with an equally long-lived \u003cstrong\u003eelectrochemical CO sensor\u003c\/strong\u003e, it requires no maintenance for a decade. The built-in \u003cstrong\u003eRF interlink module\u003c\/strong\u003e connects wirelessly with up to 11 other compatible Honeywell Home R200 series alarms — when CO is detected, \u003cstrong\u003eevery linked alarm sounds simultaneously\u003c\/strong\u003e, warning all occupants throughout the property regardless of where the hazard originates. The alarm is \u003cstrong\u003eBSI Kitemarked to BS EN 50291-1\u003c\/strong\u003e, CE and UKCA marked, and meets the \u003cstrong\u003e2022 UK CO alarm legislation\u003c\/strong\u003e for homes in England, Scotland, and Wales — making it ideal for whole-home protection in interlinked Grade F1 systems.\u003c\/p\u003e\n\n\u003c!-- STAT STRIP --\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e10\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eYear battery \u0026amp; sensor life\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e12\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarms interlinked (max)\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003e85 dB\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eAlarm sounder\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:14px 10px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:26px;font-weight:700;\"\u003eBS EN\u003cbr\u003e50291‑1\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eBSI Kitemarked\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- RED CALLOUT – CO emergency action --\u003e\n\u003cdiv style=\"background:#fff5f5;border-left:4px solid #c0392b;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Carbon Monoxide Emergency:\u003c\/strong\u003e CO is invisible, odourless, and potentially fatal at high concentrations. If this alarm sounds without a test press, \u003cstrong\u003eevacuate immediately\u003c\/strong\u003e — all occupants and pets — and call the \u003cstrong\u003eNational Gas Emergency Service: 0800 111 999\u003c\/strong\u003e (24 hrs). Do not re-enter the property until cleared by a qualified engineer.\n\u003c\/div\u003e\n\n\u003c!-- TEAL CALLOUT – legislation --\u003e\n\u003cdiv style=\"background:#e6f4f3;border-left:4px solid #008377;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eℹ UK Legislation Compliance:\u003c\/strong\u003e The R200C-N1 meets the requirements of the \u003cstrong\u003eSmoke and Carbon Monoxide Alarm (Amendment) Regulations 2022\u003c\/strong\u003e (England), the \u003cstrong\u003eScotland Technical Handbook 2022\u003c\/strong\u003e, and equivalent Welsh regulations. It is suitable as part of a \u003cstrong\u003eBS 5839-6 Grade F1\u003c\/strong\u003e interlinked system.\n\u003c\/div\u003e\n\n\u003c!-- AMBER CALLOUT – placement --\u003e\n\u003cdiv style=\"background:#fffbea;border-left:4px solid #e67e22;padding:14px 18px;border-radius:6px;margin:18px 0;\"\u003e\n  \u003cstrong style=\"color:#e67e22;\"\u003e⚠ Installation Placement:\u003c\/strong\u003e Install in every room containing a \u003cstrong\u003efixed combustion appliance\u003c\/strong\u003e (boiler, gas fire, open fire, wood burner, range cooker). Also fit in bedrooms and main living areas. If partitioned, position the alarm on the \u003cstrong\u003esame side as the CO source\u003c\/strong\u003e. Mount at \u003cstrong\u003ehead height or on the ceiling\u003c\/strong\u003e — CO is slightly lighter than air.\n\u003c\/div\u003e\n\n\u003c!-- FEATURES GRID --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;padding:16px 0;\"\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eRadio Interlink — Whole-Home CO Warning\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003ebuilt-in RF radio interlink module\u003c\/strong\u003e wirelessly connects with up to 11 other Honeywell Home R200 series alarms (CO, smoke, and heat). When CO is detected by the R200C-N1, \u003cstrong\u003eall linked alarms activate simultaneously\u003c\/strong\u003e — a critical safety feature in multi-storey homes or properties where occupants may be sleeping far from the CO source. No wiring or hub is required.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003e10-Year Electrochemical CO Sensor\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003eelectrochemical CO sensor\u003c\/strong\u003e is rated for the same 10-year service life as the battery — no mid-life sensor replacement is needed. The sensor responds accurately at the legally required CO concentration thresholds defined by \u003cstrong\u003eBS EN 50291-1\u003c\/strong\u003e, and its performance is maintained throughout the alarm's full service life, confirmed by the matching 10-year manufacturer warranty.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eSealed 10-Year Lithium Battery\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eA \u003cstrong\u003epermanently sealed, tamper-proof lithium battery pack\u003c\/strong\u003e powers the alarm for a decade without any battery replacement. The low-power standby chip preserves battery life between activations. At end of life, a clear \u003cstrong\u003eend-of-life warning signal\u003c\/strong\u003e indicates the whole alarm requires replacement, preventing any undetected gap in CO protection.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eMulti-LED Status Display\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThree dedicated LED indicators provide instant status clarity: a \u003cstrong\u003egreen POWER LED\u003c\/strong\u003e (flashes every minute in normal operation), a \u003cstrong\u003ered ALARM LED\u003c\/strong\u003e (flashes rapidly when CO is detected), and a \u003cstrong\u003eyellow FAULT LED\u003c\/strong\u003e (indicates a fault condition). The entire front face also acts as the \u003cstrong\u003etest\/silence button\u003c\/strong\u003e — press and hold to test, press briefly to silence.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eSuper-Slim, Tamper-Proof Design\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe \u003cstrong\u003esuper-slim profile\u003c\/strong\u003e keeps the alarm discreet on wall or ceiling, and the \u003cstrong\u003eoptional tamper-proof locking feature\u003c\/strong\u003e (via a small break-off cylinder on the bracket) prevents unauthorised removal — an important compliance feature for rental properties where landlords need assurance that alarms remain in place between tenancy inspections.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;background:#f0faf9;border:1px solid #c8e6e3;border-radius:8px;padding:16px;\"\u003e\n    \u003cdiv style=\"font-weight:700;color:#008377;border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;\"\u003eBSI Kitemarked \u0026amp; Fully Legislation-Compliant\u003c\/div\u003e\n    \u003cp style=\"margin:0;\"\u003eThe R200C-N1 carries \u003cstrong\u003eBSI Kitemark certification to BS EN 50291-1\u003c\/strong\u003e and is CE and UKCA marked. It meets the requirements of the \u003cstrong\u003e2022 CO alarm legislation\u003c\/strong\u003e for homes in England, Scotland, and Wales, and is suitable for use as part of a \u003cstrong\u003eBS 5839-6 Grade F1\u003c\/strong\u003e interlinked system — combining with R200S-N1 smoke alarms and R200H-N1 heat alarms for complete home coverage.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- SPEC TABLE --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;width:45%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eR200C-N1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eInterconnected Carbon Monoxide (CO) Alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSensor Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eElectrochemical CO sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSensor Life\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003ePower Source\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eSealed 10-year lithium battery (non-replaceable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eAlarm Sound Level\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e85 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eInterconnect Technology\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eRadio Frequency (RF) wireless interlink\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eMax Interconnected Alarms\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e12 (this unit + 11 others)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eCompatible Alarm Types\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eR200 series CO, smoke, and heat alarms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eLED Indicators\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eGreen (POWER), Red (ALARM), Yellow (FAULT)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eNormal Mode LED Flash\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eGreen LED: 1× every minute\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eFault Silence Duration\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eUp to 9 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eTamper-Proof Feature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eOptional locking cylinder on wall bracket\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e10 years (manufacturer)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eCertifications \/ Standards\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eCE, UKCA, BSI Kitemark, BS EN 50291-1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eSuitable System Grade\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eBS 5839-6 Grade F1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eLegislation Compliance\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003e2022 England, Scotland \u0026amp; Wales CO alarm home legislation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eWall or ceiling mount; bayonet bracket with optional tamper lock\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-weight:600;\"\u003eColour\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;\"\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- FAQ --\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:10px 16px;border-radius:6px 6px 0 0;font-size:17px;font-weight:700;margin-top:28px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eWhat is the difference between the R200C-1 and the R200C-N1?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eBoth alarms share the same \u003cstrong\u003e10-year sealed battery, electrochemical CO sensor, 85 dB sounder, and slim design\u003c\/strong\u003e. The key difference is the \u003cstrong\u003eR200C-N1 includes a built-in RF radio interlink module\u003c\/strong\u003e, allowing it to pair wirelessly with up to 11 other R200 series alarms. When CO is detected, all linked alarms sound together. The \u003cstrong\u003eR200C-1 is stand-alone\u003c\/strong\u003e and only sounds locally. Choose the R200C-N1 for multi-room or multi-floor homes where whole-property warning is important.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eCan the R200C-N1 interlink with R200S-N1 smoke alarms and R200H-N1 heat alarms?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The R200C-N1, R200S-N1, and R200H-N1 all use the \u003cstrong\u003esame RF interlink protocol\u003c\/strong\u003e and are fully cross-compatible. Up to 12 units in total can be linked in one network, mixing detector types freely. This allows you to build a complete \u003cstrong\u003eGrade F1 home safety system\u003c\/strong\u003e: CO alarms near boilers and gas appliances, smoke alarms in bedrooms and hallways, and heat alarms in kitchens — all sounding together if any hazard is detected.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eDoes the 10-year sensor life mean the alarm is accurate throughout its life?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eYes. The electrochemical CO sensor is \u003cstrong\u003erated and warranted for 10 years\u003c\/strong\u003e of accurate detection — the same duration as the battery. This means CO detection accuracy is maintained throughout the alarm's entire service life without any user intervention or sensor calibration. The manufacturer's \u003cstrong\u003e10-year warranty\u003c\/strong\u003e covers both battery and sensor performance, giving confidence that the alarm will perform to specification for its rated lifespan.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eIs the R200C-N1 required by law in rental properties?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eUnder the \u003cstrong\u003eSmoke and Carbon Monoxide Alarm (Amendment) Regulations 2022\u003c\/strong\u003e, landlords in England must install a CO alarm in any room containing a \u003cstrong\u003efixed combustion appliance\u003c\/strong\u003e (excluding gas cookers). The R200C-N1 satisfies this requirement. Its \u003cstrong\u003etamper-proof sealed battery\u003c\/strong\u003e and \u003cstrong\u003eoptional bracket locking feature\u003c\/strong\u003e ensure the alarm cannot easily be removed or disabled by tenants, and the \u003cstrong\u003eBSI Kitemark certification\u003c\/strong\u003e confirms compliance with BS EN 50291-1 as required by law.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #c8e6e3;border-top:none;padding:0;\"\u003e\n  \u003csummary style=\"background:#e6f4f3;padding:12px 16px;cursor:pointer;font-weight:600;color:#005c54;\"\u003eHow do I test the R200C-N1, and how often should I test it?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;\"\u003eTest the alarm at least \u003cstrong\u003eonce a week\u003c\/strong\u003e by pressing and holding the entire front face (which acts as the test\/silence button) for the duration specified in the manual. The alarm will emit a test sequence of beeps and LED flashes to confirm it is functioning correctly. If the alarm is interlinked, \u003cstrong\u003eall connected alarms will also sound during a test\u003c\/strong\u003e, confirming that the entire network is operational. Regular testing is recommended and in some cases required under tenancy agreements and fire risk assessments.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":64703364628829,"sku":"R200C-N1","price":43.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeR200C-1StandAloneCarbonMonoxide_CO_Alarm_78fb64a4-cbfa-44d1-ad9d-b02394f2b6c7.webp?v=1778852290"},{"product_id":"wisualarm-mains-heat-alarm-54-65c-dhi-hy-ht5ma-10-yr-lithium-backup","title":"Wisualarm Mains Heat Alarm Grade D1 | DHI-HY-HT5MA | 10-Yr Lithium Backup","description":"\u003c!-- SEO Product Name: Wisualarm Mains Heat Alarm 54-65C | DHI-HY-HT5MA | 10-Yr Lithium Backup --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-HT5MA\u003c\/strong\u003e is a mains-powered Class A1 fixed-temperature heat alarm certified to \u003cstrong\u003eBS 5446-2:2003\u003c\/strong\u003e, built for rooms where a smoke alarm would cause persistent false activations — principally kitchens, garages, utility rooms and loft spaces. It draws its primary power from a permanent 230V mains connection and backs this up with a \u003cstrong\u003e10-year rechargeable lithium battery\u003c\/strong\u003e, removing the ongoing cost and hassle of replacing a standby battery over the alarm's working life.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eA high-precision \u003cstrong\u003ethermistor\u003c\/strong\u003e triggers the alarm when the ambient temperature reaches \u003cstrong\u003e54°C–65°C\u003c\/strong\u003e, sounding an 85dB alert continuously until reset. The unit interconnects by wire with up to \u003cstrong\u003e24 other Wisualarm mains-powered smoke and heat alarms\u003c\/strong\u003e, and can optionally join the \u003cstrong\u003eWisuLink wireless mesh\u003c\/strong\u003e by adding the DHI-HY-MRF50-R8 wireless interconnect module — enabling a hybrid system that links wired and wireless devices across a property.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e54-65°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eAlarm Trigger Range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e85dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eAlarm Volume @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e10-Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eLithium Battery Back-up\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e24\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eMax Interconnected Units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eGrade D1\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eBS 5839-6 Classification\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eBS 5446-2\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eCompliance Standard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eGrade D1 — Sealed Rechargeable Back-up\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eWith its \u003cstrong\u003enon-replaceable 10-year rechargeable lithium battery\u003c\/strong\u003e providing standby power, the HT5MA is classified as a \u003cstrong\u003eGrade D1 device under BS 5839-6\u003c\/strong\u003e. This eliminates the battery-replacement obligation that applies to Grade D2 alarms, making it well suited to new-build and long-term rental properties where minimal maintenance is a priority.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eHeat Alarms, Not Smoke Alarms, for These Rooms\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eHeat alarms respond to a rise in ambient temperature rather than smoke particles, so they resist the false alarms that cooking fumes, steam and dust can trigger in a photoelectric smoke alarm. Fit heat alarms — not smoke alarms — in kitchens, garages and similar spaces, and always follow the room-by-room guidance in BS 5839-6 or your project specification.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWired by Default, Wireless-Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe HT5MA interconnects over its own dedicated wiring with other Wisualarm mains-powered smoke and heat alarms as standard. Fitting the optional \u003cstrong\u003eDHI-HY-MRF50-R8 wireless module\u003c\/strong\u003e lets it also join a \u003cstrong\u003eWisuLink 868MHz\u003c\/strong\u003e wireless network, useful where running new interconnect cable to every room isn't practical during a retrofit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003e10-Year Rechargeable Battery\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA sealed \u003cstrong\u003erechargeable lithium battery\u003c\/strong\u003e provides standby power for the alarm's full 10-year service life, with no battery changes required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHigh-Precision Thermistor Sensor\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ethermistor-based heat sensor\u003c\/strong\u003e samples the surrounding air every 10 seconds and triggers at 54°C–65°C, avoiding the false alarms smoke detection can suffer from steam or cooking fumes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHardwired Interconnect, 24 Units\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eConnects to up to \u003cstrong\u003e24 other mains-powered Wisualarm smoke and heat alarms\u003c\/strong\u003e over standard interconnect wiring, so one triggered alarm sounds every linked unit in the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eOptional Wireless Expansion\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAdding the \u003cstrong\u003eDHI-HY-MRF50-R8\u003c\/strong\u003e module lets this alarm also communicate over the 868MHz WisuLink wireless mesh, bridging wired and wireless zones in the same system.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIR Remote Test \u0026amp; Silence\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eSupports \u003cstrong\u003etest and 9-minute silence functions via any working infrared remote control\u003c\/strong\u003e, letting installers and occupants manage the alarm from floor level rather than a ceiling-mounted button.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eThree-LED Status Reporting\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003etri-colour LED indicator\u003c\/strong\u003e reports standby, alarm and fault conditions at a glance, so a technician or occupant can read the alarm's state without opening the unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eProduct Identity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel number\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eDHI-HY-HT5MA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWisualarm (by Dahua)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBS 5839-6 Grade\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGrade D1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eDetection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSensor type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eThermistor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDetection class\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eClass A1 — fixed temperature\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm temperature range\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e+54°C to +65°C (+129°F to +149°F)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSampling period\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10 s\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePrimary supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eAC 100V–250V, 50\/60Hz (mains)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby battery\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10-year rechargeable lithium (sealed, non-replaceable)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eAlarm Output\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm volume\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≥85dB(A) at 3 metres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm mode\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVisual and audible, continuous until reset\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSilencing\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYes — 9 minutes, including via IR remote\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIndicators\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGreen LED remains lit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eRed LED flashes once per second\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSensor fault\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYellow LED flashes twice per minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eLow battery backup fault\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYellow LED flashes once per minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eInterconnection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWired interconnect\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eUp to 24 hardwire interconnected units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWireless interconnect\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eUp to 24 units via optional DHI-HY-MRF50-R8 WisuLink module\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Environmental\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eØ148.6mm × H68.4mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e310 g\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eColour \/ casing\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWhite, PC+ABS\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eCeiling mount\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating environment\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIndoor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e-10°C to +55°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating humidity\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≤95% RH, non-condensing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eCertification\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCertifications\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eCE, UKCA, RCM, PSTI, BSI, Activfire\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompliance standard\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBS 5446-2:2003, AS 1603.3:2018\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eShould I fit a heat alarm or a smoke alarm in my kitchen?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eA \u003cstrong\u003eheat alarm\u003c\/strong\u003e such as the HT5MA is the correct choice for kitchens, since cooking fumes and steam routinely trigger false alarms on smoke detectors. Always check the room-by-room detector guidance in BS 5839-6 or your project's fire strategy for the specific grade and category required.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this alarm need its battery replaced?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The HT5MA uses a \u003cstrong\u003esealed 10-year rechargeable lithium battery\u003c\/strong\u003e that is not user-replaceable and is designed to last the alarm's full service life, provided it remains powered from the mains between any outages.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow many alarms can be linked together?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eUp to \u003cstrong\u003e24 Wisualarm mains-powered smoke and heat alarms\u003c\/strong\u003e can be hardwired together on the interconnect line, so that any single alarm triggering sounds every linked unit in the property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this alarm work with wireless Wisualarm devices?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, if fitted with the optional \u003cstrong\u003eDHI-HY-MRF50-R8 wireless interconnect module\u003c\/strong\u003e, which lets the HT5MA join the 868MHz WisuLink mesh alongside battery-powered wireless alarms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat does the yellow LED mean?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eA yellow LED \u003cstrong\u003eflashing twice per minute\u003c\/strong\u003e indicates a sensor fault and the unit should be replaced; flashing \u003cstrong\u003eonce per minute\u003c\/strong\u003e indicates a low battery backup fault requiring attention.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":65884615573853,"sku":"DHI-HY-HT5MA","price":27.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/D1HeatAlarmDHI-HY-HT5MA.png?v=1789050022"},{"product_id":"wisualarm-standalone-smoke-alarm-dhi-hy-sa13a-5-yr-battery","title":"Wisualarm Standalone Smoke Alarm | DHI-HY-SA13A | 5-Yr Battery","description":"\u003c!-- SEO Product Name: Wisualarm Standalone Smoke Alarm | DHI-HY-SA13A | 5-Yr Battery --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-SA13A\u003c\/strong\u003e is a standalone battery-powered smoke alarm designed for residential and office protection. It uses an advanced \u003cstrong\u003ephotoelectric sensing chamber\u003c\/strong\u003e to detect smoke efficiently while reducing the false alarms that can plague cheaper detectors, backed by a high-power buzzer and clear visual and audible alerts.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003ePower comes from a \u003cstrong\u003elong-life battery rated for up to 5 years\u003c\/strong\u003e of standby operation, so the unit can be fitted and largely forgotten between routine tests. As a standalone device it works independently of any mains supply or interconnect network, making it a straightforward option for individual rooms, rental properties and retrofit projects where wiring in a mains alarm isn't practical.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003ePhotoelectric\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSensor Type\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e85dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eAlarm Volume @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e5-Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eBattery Life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eStandalone\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eOperation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eTÜV \/ CE\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eCertifications\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eLED\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eStatus Indicator\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eStandalone Unit — No Interconnect\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe SA13A operates as an \u003cstrong\u003eindependent, standalone alarm\u003c\/strong\u003e and does not interconnect with other Wisualarm devices, wired or wireless. Where a property needs multiple alarms to sound together, look to the interconnected Wisualarm smoke alarm range instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWhy Photoelectric Detection\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003ePhotoelectric smoke sensing responds quickly to the visible, slow-burning smoke typical of smouldering fires — such as those starting in furniture or bedding — while remaining \u003cstrong\u003eless prone to false alarms from cooking steam\u003c\/strong\u003e than ionisation-type detectors, making it a well-suited general-purpose choice for living areas, bedrooms and hallways.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePhotoelectric Smoke Chamber\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAdvanced \u003cstrong\u003ephotoelectric sensing technology\u003c\/strong\u003e detects visible smoke particles quickly and accurately, cutting down on nuisance false alarms.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHigh-Power 85dB Buzzer\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA built-in \u003cstrong\u003ehigh-power buzzer sounds at 85dB(A) from 3 metres\u003c\/strong\u003e, loud enough to wake occupants and alert anyone nearby.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003e5-Year Battery Life\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003elong-duration battery rated up to 5 years\u003c\/strong\u003e keeps the alarm running through years of standby operation without a battery swap.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eVisual \u0026amp; Audible Alerting\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eCombines \u003cstrong\u003eLED indicators with the audible alarm\u003c\/strong\u003e so status and warnings are clear even in a noisy or brightly lit environment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eQuick, Simple Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eFits as a straightforward \u003cstrong\u003estandalone ceiling-mounted unit\u003c\/strong\u003e with no wiring or network configuration required, ideal for retrofits and single-room coverage.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eTÜV \u0026amp; CE Certified\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eIndependently tested and certified to \u003cstrong\u003eTÜV and CE\u003c\/strong\u003e standards, giving confidence in the alarm's reliability and safety performance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eProduct Identity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel number\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eDHI-HY-SA13A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWisualarm (by Dahua)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eStandalone (no interconnect)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eDetection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSensor type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePhotoelectric\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePower source\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eBattery-powered\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBattery life\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eUp to 5 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eAlarm Output\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm volume\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e85dB(A) at 3 metres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm mode\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVisual and audible alarm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eCeiling mount\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eCertification\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCertifications\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eTÜV and CE listed\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this alarm interconnect with other Wisualarm devices?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SA13A is a \u003cstrong\u003estandalone unit\u003c\/strong\u003e and does not link to other smoke or heat alarms, wired or wireless. For a linked multi-room system, choose from the interconnected Wisualarm range instead.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow long does the battery last?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe SA13A is rated for \u003cstrong\u003eup to 5 years\u003c\/strong\u003e of battery life under normal standby conditions, though the alarm should still be tested regularly using its built-in test function.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat type of smoke does this alarm detect best?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eIts \u003cstrong\u003ephotoelectric sensor\u003c\/strong\u003e responds particularly well to the visible, slow-burning smoke typical of smouldering fires, and is generally less prone to false alarms from cooking steam than ionisation-based detectors.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhere should this alarm be installed?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eAs a general-purpose standalone smoke alarm, it suits \u003cstrong\u003eliving rooms, bedrooms and hallways\u003c\/strong\u003e. For kitchens, garages and similarly fume- or steam-prone spaces, a heat alarm is the more appropriate choice.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":65884730720605,"sku":"DHI-HY-SA13A","price":7.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/WisualarmSmokeAlarmDHI-HY-SA13A.jpg?v=1789050979"},{"product_id":"wisualarm-standalone-smoke-alarm-dhi-hy-sa40a-10-yr-sealed-battery","title":"Wisualarm Standalone Smoke Alarm | DHI-HY-SA40A | 10-Yr Sealed Battery","description":"\u003c!-- SEO Product Name: Wisualarm Standalone Smoke Alarm | DHI-HY-SA40A | 10-Yr Sealed Battery --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-SA40A\u003c\/strong\u003e is a standalone photoelectric smoke alarm built around a \u003cstrong\u003esealed, non-replaceable 3V lithium battery rated for a full 10 years\u003c\/strong\u003e — the entire expected service life of the alarm. This removes battery maintenance entirely and eliminates the risk of an alarm being left running on a flat or removed battery, making it a strong fit for rental properties and landlord-managed housing stock.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eIts \u003cstrong\u003esplit-spectrum sensor technology\u003c\/strong\u003e is engineered to reduce false alarms from dust and steam while remaining sensitive to genuine smoke events, and a single button handles both testing and silencing, with silencing also available via a \u003cstrong\u003eworking infrared remote controller\u003c\/strong\u003e for units mounted out of easy reach.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003ePhotoelectric\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSensor Type\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e85dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eAlarm Volume @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e10-Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSealed Battery Life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e9 min\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSilence Duration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eEN 14604\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eCompliance Standard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eTÜV \/ CE\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eCertifications\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003e10-Year Sealed Battery, Zero Maintenance\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe SA40A's \u003cstrong\u003e3V CR123A lithium battery is sealed and non-replaceable\u003c\/strong\u003e, rated to last the alarm's full \u003cstrong\u003e10-year service life\u003c\/strong\u003e. There's no battery to change, no low-battery chirp to chase down at 3am, and no risk of an occupant removing a failed battery and leaving the alarm disabled.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eCoverage Guidance\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eFor ceiling heights under 8 metres, each SA40A is rated to protect an area of approximately \u003cstrong\u003e20m²–40m²\u003c\/strong\u003e. Always confirm detector spacing and quantity against BS 5839-6 or your project's fire safety specification rather than coverage area alone.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003e10-Year Sealed Lithium Battery\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003enon-replaceable 3V lithium cell\u003c\/strong\u003e is rated to power the alarm for its entire 10-year working life, with no battery changes ever required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSplit-Spectrum Sensor Technology\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eReduces \u003cstrong\u003efalse alarms triggered by dust and steam\u003c\/strong\u003e while maintaining fast, reliable response to genuine smoke conditions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eOne-Button Test \u0026amp; Silence\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA single button handles both \u003cstrong\u003etesting and silencing\u003c\/strong\u003e, and the alarm can also be silenced using any working \u003cstrong\u003einfrared remote controller\u003c\/strong\u003e for hard-to-reach installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLow Quiescent Current Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003e\n\u003cstrong\u003eUltra-low standby current draw\u003c\/strong\u003e (≤15μA average) helps the sealed battery deliver its full rated 10-year lifespan.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eSurface-Mount Circuit Board\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eBuilt on a \u003cstrong\u003esurface-mount device (SMD) circuit board\u003c\/strong\u003e for consistent manufacturing quality and long-term reliability.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eLow Battery Warning\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA clear \u003cstrong\u003elow battery warning signal\u003c\/strong\u003e gives advance notice as the sealed cell approaches end of life, well before it can no longer power the alarm.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eProduct Identity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel number\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eDHI-HY-SA40A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWisualarm (by Dahua)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eStandalone\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eDetection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSensor type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePhotoelectric, split-spectrum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSampling period\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e9 s\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm response threshold\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.2dB\/m–0.3dB\/m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCoverage area\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e20m²–40m² (ceiling height under 8m)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePower source\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e3V CR123A lithium battery (sealed, non-replaceable)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBattery life\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eMonitoring current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≤15μA (avg.)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm current\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≤35mA (avg.)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eAlarm Output\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm volume\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e85dB(A) at 3 metres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm mode\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVisual and audible alarm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSilencing\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYes — 9 minutes, including via IR remote\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIndicators\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGreen LED flashes once per minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eRed LED flashes once per second\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eFault\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eRed LED flashes twice per minute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePhysical \u0026amp; Environmental\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eØ81.5mm × H51.6mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e110 g\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eColour \/ casing\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWhite, PC+ABS\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eCeiling mount\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating environment\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eIndoor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e-10°C to +55°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eOperating humidity\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≤95% RH, non-condensing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eCertification\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCertifications\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eTÜV and CE listed\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eCompliance standard\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eEN 14604:2005+AC:2008\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan the battery in this alarm be replaced?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SA40A uses a \u003cstrong\u003esealed, non-replaceable 3V lithium battery\u003c\/strong\u003e rated to last the full 10-year service life of the alarm. Once the battery is depleted, the whole unit is replaced.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow is the alarm silenced during a false alarm?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003ePress the alarm's \u003cstrong\u003esingle test\/silence button\u003c\/strong\u003e, or use any working \u003cstrong\u003einfrared remote controller\u003c\/strong\u003e pointed at the unit, which silences the alarm for approximately 9 minutes.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat area does one alarm cover?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eWhere the ceiling height is under 8 metres, each SA40A is rated to cover approximately \u003cstrong\u003e20m² to 40m²\u003c\/strong\u003e. Always confirm exact detector layout against the applicable fire safety standard for the property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this alarm interconnect with other alarms?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo, the DHI-HY-SA40A is a \u003cstrong\u003estandalone unit\u003c\/strong\u003e. For a linked, wirelessly interconnected version, see the HY-SA40A-R8 variant in the Wisualarm range.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this alarm suitable for a rental property?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes — its \u003cstrong\u003esealed 10-year battery\u003c\/strong\u003e removes the ongoing battery-replacement burden that affects landlords and letting agents managing multiple properties, reducing routine maintenance callouts.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":65884817293661,"sku":"DHI-HY-SA40A","price":16.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/WisualarmStandaloneSmokeAlarm_4b2c0eaf-598b-457a-ba2c-bba3f6db89b2.jpg?v=1789051694"},{"product_id":"wisualarm-mains-smoke-alarm-dhi-hy-sa5mb-replaceable-9v-backup","title":"Wisualarm Mains Smoke Alarm | DHI-HY-SA5MB | Replaceable 9V Backup","description":"\u003c!-- SEO Product Name: Wisualarm Mains Smoke Alarm | DHI-HY-SA5MB | Replaceable 9V Backup --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-SA5MB\u003c\/strong\u003e is a mains-powered photoelectric smoke alarm that draws its primary power from a permanent 230V mains connection and includes a \u003cstrong\u003ereplaceable 9V alkaline battery\u003c\/strong\u003e as standby backup. Its photoelectric sensing chamber is suited to general residential rooms — living rooms, bedrooms, hallways and landings — wherever early smoke detection is needed.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe alarm's \u003cstrong\u003e85dB(A) sounder\u003c\/strong\u003e gives clear audible warning alongside a visual LED indicator, and it interconnects by wire with up to \u003cstrong\u003e24 other Wisualarm mains-powered smoke and heat alarms\u003c\/strong\u003e, so one triggered unit sounds every linked alarm across the property. Test and silence functions are supported via any working infrared remote control, useful for ceiling-mounted units out of easy reach.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003ePhotoelectric\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSensor Type\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e≥85dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eAlarm Volume @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e9V\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eReplaceable Battery\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e24\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eMax Interconnected Units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eGrade D2\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eBS 5839-6 Classification\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eMains + Backup\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eGrade D2 — Familiar Replaceable Battery\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe SA5MB's \u003cstrong\u003ereplaceable 9V alkaline standby battery\u003c\/strong\u003e classifies it as a \u003cstrong\u003eGrade D2 device under BS 5839-6\u003c\/strong\u003e. This is widely specified in rental properties and retrofit installations, where a familiar, low-cost 9V battery is straightforward for landlords or occupants to source and replace.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eAnnual Battery Check Recommended\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe standby 9V alkaline battery should be checked and replaced as part of an annual maintenance visit, alongside testing the alarm's own test and silence function, to ensure backup power remains available during any mains interruption.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003ePhotoelectric Smoke Detection — Not for Kitchens\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esmoke alarm\u003c\/strong\u003e, not a heat alarm, so it should not be fitted in kitchens or other rooms prone to cooking fumes and steam, which can trigger false alarms. For those spaces, use a Wisualarm heat alarm such as the HT5MA or HT5MB instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eReplaceable 9V Standby Battery\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA standard \u003cstrong\u003e9V alkaline battery\u003c\/strong\u003e provides backup power during mains interruptions and can be replaced by any competent person without specialist tools.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePhotoelectric Smoke Sensing\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ephotoelectric sensing chamber\u003c\/strong\u003e gives fast, reliable detection of visible smoke while resisting many of the nuisance triggers that affect other detection types.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHardwired Interconnect, 24 Units\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eConnects to up to \u003cstrong\u003e24 other mains-powered Wisualarm smoke and heat alarms\u003c\/strong\u003e over standard interconnect wiring, so one triggered alarm sounds every linked unit in the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIR Remote Test \u0026amp; Silence\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eSupports \u003cstrong\u003etest and 9-minute silence functions via any working infrared remote control\u003c\/strong\u003e, letting installers and occupants manage the alarm from floor level rather than a ceiling-mounted button.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003e85dB Audible Alarm\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA built-in sounder delivers \u003cstrong\u003e≥85dB(A) at 3 metres\u003c\/strong\u003e, loud enough to alert occupants throughout a typical room or hallway.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eClear LED Status Reporting\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003egreen\/red LED indicator\u003c\/strong\u003e reports standby and alarm conditions at a glance, so status is clear without needing to open the unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eProduct Identity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel number\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eDHI-HY-SA5MB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWisualarm (by Dahua)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBS 5839-6 Grade\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGrade D2\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eDetection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSensor type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePhotoelectric\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSampling period\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10 s\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm response threshold\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.2dB\/m–0.3dB\/m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePrimary supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eAC 100V–250V, 50\/60Hz (mains)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby battery\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eReplaceable 9V alkaline battery\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eAlarm Output\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm volume\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≥85dB(A) at 3 metres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm mode\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVisual and audible alarm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSilencing\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYes — 9 minutes, including via IR remote\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIndicators\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGreen LED remains lit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eRed LED flashes once per second\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eInterconnection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWired interconnect\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eUp to 24 hardwire interconnected units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eCeiling mount\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow often does the backup battery need replacing?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eThe 9V alkaline standby battery should be checked and replaced as part of \u003cstrong\u003eroutine annual maintenance\u003c\/strong\u003e, so backup power remains available during any mains interruption.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow many alarms can be linked together?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eUp to \u003cstrong\u003e24 Wisualarm mains-powered smoke and heat alarms\u003c\/strong\u003e can be hardwired together on the interconnect line, so that any single alarm triggering sounds every linked unit in the property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this alarm suitable for a kitchen?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. This is a \u003cstrong\u003ephotoelectric smoke alarm\u003c\/strong\u003e, and cooking fumes and steam can trigger false alarms. Fit a Wisualarm heat alarm, such as the HT5MA or HT5MB, in kitchens and similar spaces instead.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat's the difference between the SA5MA and SA5MB?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eBoth are mains-powered photoelectric smoke alarms with the same 24-unit interconnect capability. The SA5MA uses a \u003cstrong\u003esealed rechargeable lithium battery\u003c\/strong\u003e, while the SA5MB uses a \u003cstrong\u003ereplaceable 9V alkaline battery\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this alarm be silenced from floor level?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, the SA5MB can be tested and silenced using any working \u003cstrong\u003einfrared remote controller\u003c\/strong\u003e, avoiding the need to reach a ceiling-mounted unit directly.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":65884981985629,"sku":"DHI-HY-SA5MB","price":25.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/WisualarmMainsSmokeAlarm.jpg?v=1789052688"},{"product_id":"wisualarm-standalone-carbon-monoxide-alarm-dhi-hy-gc20a-10-yr-battery","title":"Wisualarm Standalone Carbon Monoxide Alarm | DHI-HY-GC20A | 10-Yr Battery","description":"\u003c!-- SEO Product Name: Wisualarm Standalone Carbon Monoxide Alarm | DHI-HY-GC20B | 10-Yr Battery LCD --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-GC20A\u003c\/strong\u003e is a standalone carbon monoxide alarm built to continuously monitor CO concentration in the home using a \u003cstrong\u003ehigh-performance Figaro electrochemical sensor\u003c\/strong\u003e. It responds quickly and accurately to rising CO levels while maintaining stable, low-false-alarm performance, and is suitable for homes, restaurants, hotels and any other space that needs carbon monoxide detection.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eAn \u003cstrong\u003eeasy-to-read \u003c\/strong\u003ethree separate LED indicators for alarm, fault and power status, so occupants can see the alarm's condition at a glance. Power comes from a \u003cstrong\u003ereplaceable 3V CR123A lithium battery rated for up to 10 years\u003c\/strong\u003e, and the unit supports low battery warning, one-click silence and self-test functions from a single control button.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003eElectrochemical\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eFigaro CO Sensor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e\u0026gt;85dB\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eAlarm Volume @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e10-Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eBattery Life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003eLED\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eCO Display\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003eStandalone\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eOperation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003eEN 50291-1\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eCompliance Standard\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FDECEC; border-left: 4px solid #D32F2F; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #d32f2f; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eUK Legal Requirement — Carbon Monoxide Alarms\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eUnder the \u003cstrong\u003eSmoke and Carbon Monoxide Alarm (Amendment) Regulations 2022\u003c\/strong\u003e, private sector landlords in England must install a CO alarm in every room with a fixed combustion appliance (excluding gas cookers); social landlords have been subject to the same requirement since 1 February 2023. The \u003cstrong\u003eDHI-HY-GC20A, certified to EN 50291-1:2018\u003c\/strong\u003e, meets the technical standard required for compliance. Scottish properties are subject to separate requirements under the Housing (Scotland) Act 2006.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #FFF6E5; border-left: 4px solid #E0942A; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #e0942a; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eStandalone Unit — No Interconnect\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eThe GC20A operates as an \u003cstrong\u003eindependent, standalone alarm\u003c\/strong\u003e and does not interconnect wirelessly with other CO alarms. Where a property needs multiple CO alarms linked together, the wireless interconnected Wisualarm CO alarm range (such as the GC20A-R8) is the appropriate choice instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eHigh-Performance Figaro CO Sensor\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA \u003cstrong\u003eFigaro electrochemical sensor\u003c\/strong\u003e delivers accurate detection of carbon monoxide leakage and responds quickly to rising concentrations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003e10-Year Replaceable Battery\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003ePowered by a \u003cstrong\u003ereplaceable 3V CR123A lithium battery\u003c\/strong\u003e with a rated life of up to 10 years, combining long standby time with low power consumption.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eThree-LED Status Indication\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eSeparate \u003cstrong\u003ered, yellow and green LED indicators\u003c\/strong\u003e clearly display alarm, fault and power status respectively, so the device's condition is obvious at a glance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eOne-Click Silence \u0026amp; Self-Test\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eSupports \u003cstrong\u003elow battery warning, one-click silence, and self-test\u003c\/strong\u003e from a single control, simplifying routine checks and false-alarm management.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eCompact Wall-Mounted Design\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA \u003cstrong\u003edelicate, compact enclosure\u003c\/strong\u003e designed for simple and convenient wall-mounted installation in any room requiring CO detection.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eProduct Identity\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eModel number\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eDHI-HY-GC20A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWisualarm (by Dahua)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eOperation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eStandalone\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eDetection\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCollection type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eCarbon Monoxide (CO)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eSensor type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eElectrochemical (Figaro)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eAlarm response threshold\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e50ppm: 60–90 min  |  100ppm: 10–40 min  |  300ppm: \u0026lt;3 min\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003ePower source\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e3V CR123A lithium battery (replaceable)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eBattery life\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e10 years\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMonitoring current\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e≤20μA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eAlarm current\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e≤10mA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eAlarm Output\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eAlarm volume\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eOver 85dB(A) at 3 metres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eAlarm mode\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eVisual and audible alarm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eSilencing\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eYes — approx. 45 seconds\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eIndicators\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eAlarm\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eRed LED\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eFault\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eYellow LED\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eGreen LED\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003ePhysical \u0026amp; Environmental\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e116.4mm × 71.7mm × 28.3mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e125 g\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eColour \/ material\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWhite, PC + ABS\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWall mount\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eOperating environment\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eIndoor use only\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eOperating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e-10°C to +40°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eOperating humidity\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e≤95% RH, non-condensing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eCertification\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCertifications\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eTÜV and CE listed\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCompliance standard\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eEN 50291-1:2018\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhere should a carbon monoxide alarm be installed?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eFit a CO alarm in \u003cstrong\u003eevery room with a fixed combustion appliance\u003c\/strong\u003e — a gas or oil boiler, gas fire, log burner, open fireplace, wood-burning stove or pellet stove — typically within 1–3 metres of the appliance on the same level, plus each sleeping level of the property.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eIs a CO alarm a legal requirement?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eYes. Under the \u003cstrong\u003eSmoke and Carbon Monoxide Alarm (Amendment) Regulations 2022\u003c\/strong\u003e, private and social landlords in England must fit a CO alarm in any room with a fixed combustion appliance (excluding gas cookers). Scottish properties follow separate requirements under the Housing (Scotland) Act 2006.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eHow long does the battery last?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eThe GC20A's \u003cstrong\u003ereplaceable 3V CR123A lithium battery\u003c\/strong\u003e is rated for up to 10 years of service, with a low battery warning to give advance notice before replacement is needed.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eCan this alarm be interconnected with other CO alarms?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eNo, the DHI-HY-GC20A is a \u003cstrong\u003estandalone device\u003c\/strong\u003e. For a wirelessly interconnected CO alarm that links with other WisuLink devices, look to the Wisualarm GC20A-R8 or GC30A-R8 models instead.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":65885175906653,"sku":"DHI-HY-GC20A","price":14.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/WisualarmStandaloneCarbonMonoxideAlarmDHI-HY-GC20A.jpg?v=1789054890"},{"product_id":"wisualarm-mains-smoke-alarm-d1-grade-dhi-hy-sa5ma-10-yr-lithium-backup","title":"Wisualarm Mains Smoke Alarm Grade D1 | DHI-HY-SA5MA | 10-Yr Lithium Backup","description":"\u003c!-- SEO Product Name: Wisualarm Mains Smoke Alarm | DHI-HY-SA5MA | 10-Yr Lithium Backup --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; color:#2B2B2B; line-height:1.6; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-SA5MA\u003c\/strong\u003e is a mains-powered photoelectric smoke alarm that draws its primary power from a permanent 230V mains connection and backs this up with a \u003cstrong\u003e10-year rechargeable lithium battery\u003c\/strong\u003e, removing the ongoing cost and hassle of replacing a standby battery over the alarm's working life. It suits general residential rooms — living rooms, bedrooms, hallways and landings — wherever early smoke detection is needed.\u003c\/p\u003e\n\u003cp style=\"font-size:16px; line-height:1.7; color:#2B2B2B; margin:0 0 16px 0;\"\u003eThe alarm's \u003cstrong\u003e85dB(A) sounder\u003c\/strong\u003e gives clear audible warning alongside a visual LED indicator, and it interconnects by wire with up to \u003cstrong\u003e24 other Wisualarm mains-powered smoke and heat alarms\u003c\/strong\u003e, so one triggered unit sounds every linked alarm across the property. Test and silence functions are supported via any working infrared remote control, useful for ceiling-mounted units out of easy reach.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003ePhotoelectric\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eSensor Type\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e≥85dB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eAlarm Volume @ 3m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e10-Yr\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eLithium Battery Back-up\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003e24\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eMax Interconnected Units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eGrade D1\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003eBS 5839-6 Classification\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#ffffff; border-radius:8px; padding:16px 10px; text-align:center; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px; font-weight:700; line-height:1.2;\"\u003eMains + Backup\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; font-weight:400; margin-top:4px; letter-spacing:.02em;\"\u003ePower Supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eGrade D1 — Sealed Rechargeable Back-up\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eWith its \u003cstrong\u003enon-replaceable 10-year rechargeable lithium battery\u003c\/strong\u003e providing standby power, the SA5MA is classified as a \u003cstrong\u003eGrade D1 device under BS 5839-6\u003c\/strong\u003e. This eliminates the battery-replacement obligation that applies to Grade D2 alarms, making it well suited to new-build and long-term rental properties where minimal maintenance is a priority.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F4F3; border-left:4px solid #008377CF; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#008377CF; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003eWired by Default, Wireless-Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThe SA5MA interconnects over its own dedicated wiring with other Wisualarm mains-powered smoke and heat alarms as standard. Fitting the optional \u003cstrong\u003eDHI-HY-MRF50-R8 wireless module\u003c\/strong\u003e lets it also join a \u003cstrong\u003eWisuLink 868MHz\u003c\/strong\u003e wireless network, useful where running new interconnect cable to every room isn't practical during a retrofit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E5; border-left:4px solid #E0942A; border-radius:6px; padding:14px 18px; margin:0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size:14px; font-weight:700; color:#E0942A; text-transform:uppercase; letter-spacing:.04em; margin-bottom:6px;\"\u003ePhotoelectric Smoke Detection — Not for Kitchens\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; color:#2B2B2B; line-height:1.6;\"\u003eThis is a \u003cstrong\u003esmoke alarm\u003c\/strong\u003e, not a heat alarm, so it should not be fitted in kitchens or other rooms prone to cooking fumes and steam, which can trigger false alarms. For those spaces, use a Wisualarm heat alarm such as the HT5MA or HT5MB instead.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003e10-Year Rechargeable Battery\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA sealed \u003cstrong\u003erechargeable lithium battery\u003c\/strong\u003e provides standby power for the alarm's full 10-year service life, with no battery changes required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003ePhotoelectric Smoke Sensing\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003ephotoelectric sensing chamber\u003c\/strong\u003e gives fast, reliable detection of visible smoke while resisting many of the nuisance triggers that affect other detection types.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eHardwired Interconnect, 24 Units\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eConnects to up to \u003cstrong\u003e24 other mains-powered Wisualarm smoke and heat alarms\u003c\/strong\u003e over standard interconnect wiring, so one triggered alarm sounds every linked unit in the property.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eOptional Wireless Expansion\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eAdding the \u003cstrong\u003eDHI-HY-MRF50-R8\u003c\/strong\u003e module lets this alarm also communicate over the 868MHz WisuLink wireless mesh, bridging wired and wireless zones in the same system.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eIR Remote Test \u0026amp; Silence\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eSupports \u003cstrong\u003etest and 9-minute silence functions via any working infrared remote control\u003c\/strong\u003e, letting installers and occupants manage the alarm from floor level rather than a ceiling-mounted button.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; background:#F7FAFA; border:1px solid #D9EDEA; border-radius:8px; padding:16px; margin:4px;\"\u003e\n\u003cdiv style=\"font-size:15px; font-weight:700; color:#00625D; margin-bottom:6px;\"\u003eClear LED Status Reporting\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; color:#444444; line-height:1.6;\"\u003eA \u003cstrong\u003egreen\/red LED indicator\u003c\/strong\u003e reports standby and alarm conditions at a glance, so status is clear without needing to open the unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; overflow:hidden; margin:0 0 24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eProduct Identity\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eModel number\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eDHI-HY-SA5MA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eWisualarm (by Dahua)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eBS 5839-6 Grade\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGrade D1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eDetection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSensor type\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003ePhotoelectric\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSampling period\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10 s\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm response threshold\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e0.2dB\/m–0.3dB\/m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003ePrimary supply\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eAC 100V–250V, 50\/60Hz (mains)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby battery\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e10-year rechargeable lithium (sealed, non-replaceable)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eAlarm Output\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm volume\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003e≥85dB(A) at 3 metres\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm mode\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eVisual and audible alarm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eSilencing\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eYes — 9 minutes, including via IR remote\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eIndicators\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eStandby\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eGreen LED remains lit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eAlarm\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eRed LED flashes once per second\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eInterconnection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWired interconnect\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eUp to 24 hardwire interconnected units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#FFFFFF; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eWireless interconnect\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eUp to 24 units via optional DHI-HY-MRF50-R8 WisuLink module\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; font-size:12px; letter-spacing:.06em; text-transform:uppercase; padding:9px 14px;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#F0F9F8; border-bottom:1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex:0 0 44%; padding:10px 14px; font-size:14px; font-weight:600; color:#333333;\"\u003eInstallation\u003c\/div\u003e\n\u003cdiv style=\"flex:1; padding:10px 14px; font-size:14px; color:#222222;\"\u003eCeiling mount\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eDoes this alarm need its battery replaced?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. The SA5MA uses a \u003cstrong\u003esealed 10-year rechargeable lithium battery\u003c\/strong\u003e that is not user-replaceable and is designed to last the alarm's full service life, provided it remains powered from the mains between any outages.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eHow many alarms can be linked together?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eUp to \u003cstrong\u003e24 Wisualarm mains-powered smoke and heat alarms\u003c\/strong\u003e can be hardwired together on the interconnect line, so that any single alarm triggering sounds every linked unit in the property.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eIs this alarm suitable for a kitchen?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eNo. This is a \u003cstrong\u003ephotoelectric smoke alarm\u003c\/strong\u003e, and cooking fumes and steam can trigger false alarms. Fit a Wisualarm heat alarm, such as the HT5MA or HT5MB, in kitchens and similar spaces instead.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eCan this alarm work with wireless Wisualarm devices?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eYes, if fitted with the optional \u003cstrong\u003eDHI-HY-MRF50-R8 wireless interconnect module\u003c\/strong\u003e, which lets the SA5MA join the 868MHz WisuLink mesh alongside battery-powered wireless alarms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #D9EDEA; border-radius:8px; margin-bottom:10px; overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px; font-size:15px; font-weight:700; color:#00625D; cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; background:#E6F4F3;\"\u003e\u003cspan\u003eWhat's the difference between the SA5MA and SA5MB?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px 18px; font-size:14px; color:#444444; line-height:1.65; border-top:1px solid #D9EDEA; background:#ffffff;\"\u003eBoth are mains-powered photoelectric smoke alarms with the same 24-unit interconnect capability. The SA5MA uses a \u003cstrong\u003esealed 10-year rechargeable lithium battery\u003c\/strong\u003e (Grade D1), while the SA5MB uses a \u003cstrong\u003ereplaceable 9V alkaline battery\u003c\/strong\u003e (Grade D2).\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":65885654155613,"sku":"DHI-HY-SA5MA","price":32.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/WisualarmMainsSmokeAlarm.jpg?v=1789052688"},{"product_id":"wisualarm-wireless-interconnect-module-dhi-hy-mrf50-r8-868mhz-24-unit","title":"Wisualarm Wireless Interconnect Module | DHI-HY-MRF50-R8 | 868MHz 24-Unit","description":"\u003c!-- SEO Product Name: Wisualarm Wireless Interconnect Module | DHI-HY-MRF50-R8 | 868MHz 24-Unit --\u003e\n\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; color: #2b2b2b; line-height: 1.6; font-family: Arial, Helvetica, sans-serif;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe \u003cstrong\u003eWisualarm DHI-HY-MRF50-R8\u003c\/strong\u003e is a wireless interconnect module that fits into the base of a compatible Wisualarm mains-powered smoke or heat alarm, giving it the ability to join the \u003cstrong\u003e868MHz WisuLink wireless mesh\u003c\/strong\u003e alongside battery-powered wireless alarms. It's the bridge component for hybrid installations, where some detectors are hardwired together and others communicate wirelessly, without needing every alarm on the same physical interconnect line.\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.7; color: #2b2b2b; margin: 0 0 16px 0;\"\u003eThe module is \u003cstrong\u003epowered directly from the host alarm head\u003c\/strong\u003e, so it needs no separate battery or power supply of its own, and links wirelessly with up to \u003cstrong\u003e24 other WisuLink-compatible devices\u003c\/strong\u003e. A flashing red LED indicates active RF transmission, giving a clear visual confirmation that the module is communicating with the rest of the network.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 20px 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e868MHz\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eRF Frequency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e24\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eMax Interconnected Units\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e1000m\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eRF Range (Open Air)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003e11.9g\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003ePowered\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eFrom Host Alarm Head\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #ffffff; border-radius: 8px; padding: 16px 10px; text-align: center; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 20px; font-weight: bold; line-height: 1.2;\"\u003eCE \/ UKCA\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; font-weight: 400; margin-top: 4px; letter-spacing: .02em;\"\u003eCertifications\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #E6F4F3; border-left: 4px solid #008377CF; border-radius: 6px; padding: 14px 18px; margin: 0 0 20px 0;\"\u003e\n\u003cdiv style=\"font-size: 14px; font-weight: bold; color: #008377cf; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px;\"\u003eBridging Wired and Wireless Zones\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #2b2b2b; line-height: 1.6;\"\u003eFitting this module to a mains-powered Wisualarm smoke or heat alarm — such as the HT5MA, HT5MB, SA5MA or SA5MB — lets that hardwired unit also communicate with battery-powered wireless alarms elsewhere in the property. This is particularly useful in retrofit projects where running new interconnect cable to every room isn't practical, but whole-property alarm coverage is still required.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003ePowered From the Host Alarm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eDraws its power directly from the \u003cstrong\u003ealarm head it's fitted into\u003c\/strong\u003e, requiring no separate battery or mains connection of its own.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003e868MHz WisuLink Wireless\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eCommunicates over the same \u003cstrong\u003e868MHz WisuLink frequency\u003c\/strong\u003e used across the Wisualarm wireless range, ensuring full compatibility with other -R8 devices.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eUp to 24 Interconnected Devices\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eLinks wirelessly with up to \u003cstrong\u003e24 other WisuLink-compatible devices\u003c\/strong\u003e, extending a hardwired alarm's reach into a mixed wired\/wireless network.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eLong RF Range\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eRated for a wireless range of \u003cstrong\u003eup to 1000 metres in open, interference-free conditions\u003c\/strong\u003e, giving reliable coverage across most residential and small commercial properties.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eClear RF Status Indicator\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eA \u003cstrong\u003eflashing red LED\u003c\/strong\u003e confirms active RF transmission, giving installers and occupants a simple visual check that the module is communicating correctly.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 260px; background: #F7FAFA; border: 1px solid #D9EDEA; border-radius: 8px; padding: 16px; margin: 4px;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #00625d; margin-bottom: 6px;\"\u003eCompact, Low-Profile Fit\u003c\/div\u003e\n\u003cdiv style=\"font-size: 14px; color: #444444; line-height: 1.6;\"\u003eAt just \u003cstrong\u003e53.5mm × 38.2mm × 11.7mm and 11.9g\u003c\/strong\u003e, the module fits discreetly into the compatible alarm's base without adding noticeable bulk.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; overflow: hidden; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eProduct Identity\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eModel number\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eDHI-HY-MRF50-R8 (also listed as HY-MRF60-R8)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eBrand\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWisualarm (by Dahua)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eProduct type\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWireless interconnect module\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003ePower\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003ePower supply\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003ePowered from host alarm head\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eWireless\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eRF frequency\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e868MHz (-R8 variant) \/ 925MHz (-R9 variant)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eRF range\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eUp to 1000 metres in open, interference-free area\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eMaximum interconnected units\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eUp to 24 WisuLink RF devices\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eRF visual indicator\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eFlashing red LED during RF transmission\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003ePhysical \u0026amp; Environmental\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e53.5mm × 38.2mm × 11.7mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eWeight\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e11.9 g\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eColour \/ casing\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eWhite, PC+ABS\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #FFFFFF; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eOperating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e-10°C to +55°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eOperating humidity\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003e≤95% RH, non-condensing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #ffffff; font-weight: bold; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px;\"\u003eCertification\u003c\/div\u003e\n\u003cdiv style=\"display: flex; background: #F0F9F8; border-bottom: 1px solid #D9EDEA;\"\u003e\n\u003cdiv style=\"flex: 0 0 44%; padding: 10px 14px; font-size: 14px; font-weight: 600; color: #333333;\"\u003eCertifications\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; padding: 10px 14px; font-size: 14px; color: #222222;\"\u003eCE, UKCA, PSTI, RCM\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhat does this module do?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eIt's a \u003cstrong\u003ewireless interconnect module\u003c\/strong\u003e that fits into the base of a compatible mains-powered Wisualarm smoke or heat alarm, giving that hardwired unit the ability to also communicate wirelessly with other WisuLink devices at 868MHz.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eWhich alarms is this module compatible with?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eIt's designed for \u003cstrong\u003emains-powered Wisualarm smoke and heat alarms\u003c\/strong\u003e with a compatible base, such as the HT5MA, HT5MB, SA5MA and SA5MB, allowing them to join a wireless network alongside battery-powered wireless alarms.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eDoes the module need its own power source?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eNo. The module is \u003cstrong\u003epowered directly from the host alarm head\u003c\/strong\u003e once fitted, so it doesn't require a separate battery or mains connection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eHow many devices can this module connect to?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eIt links wirelessly with up to \u003cstrong\u003e24 other WisuLink-compatible devices\u003c\/strong\u003e, matching the maximum interconnect capacity of the wider Wisualarm wireless range.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #D9EDEA; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #00625d; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #E6F4F3;\"\u003e\u003cspan\u003eIs HY-MRF60-R8 a different product?\u003c\/span\u003e\u003csvg width=\"16\" height=\"16\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377CF\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px 18px; font-size: 14px; color: #444444; line-height: 1.65; border-top: 1px solid #D9EDEA; background: #ffffff;\"\u003eNo — Dahua's own documentation and datasheets reference the \u003cstrong\u003eDHI-HY-MRF50-R8 and HY-MRF60-R8\u003c\/strong\u003e part numbers for the same physical wireless interconnect module, sharing identical specifications.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":65891508322653,"sku":"DHI-HY-MRF50-R8","price":17.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/WisualarmWirelessInterconnectModuleDHI-HY-MRF50-R8.jpg?v=1789123404"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/collections\/Safety_alarms_feature_image.jpg?v=1791219855","url":"https:\/\/qualityheating.co.uk\/collections\/smoke-heat-carbon-monoxide-alarms.oembed","provider":"AIZO Quality Heating","version":"1.0","type":"link"}