{"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","url":"https:\/\/qualityheating.co.uk\/products\/wisualarm-standalone-carbon-monoxide-alarm-dhi-hy-gc20a-10-yr-battery","provider":"AIZO Quality Heating","version":"1.0","type":"link"}