{"title":"Honeywell","description":"\u003cp\u003eHoneywell is a globally recognised brand in heating control and building management technology, known for delivering reliable, precise, and energy-efficient solutions for residential and commercial environments. With decades of engineering expertise, it designs intelligent systems that help improve comfort, control energy use, and support modern heating requirements.\u003c\/p\u003e\n\n\u003cp\u003eHoneywell heating control solutions are built to provide accurate temperature regulation, dependable system control, and seamless integration with a wide range of heating setups. From traditional central heating systems to advanced smart and connected environments, itd technology supports consistent performance and long-term reliability. Its focus on system efficiency helps reduce energy waste while maintaining stable indoor comfort.\u003c\/p\u003e\n\n\u003cp\u003eDesigned with both installers and end users in mind, its products are recognised for their robust build quality, ease of installation, and compatibility with industry-standard heating components. Whether used in single-zone or multi-zone systems, it controls enable flexible heating management and improved system responsiveness.\u003c\/p\u003e\n\n\u003cp\u003eAs homes and buildings move toward smarter and more energy-conscious operation, it continues to play a key role by providing trusted heating control solutions that align with evolving efficiency standards and user expectations. The brand’s commitment to innovation and dependable performance makes Honeywell a leading choice for heating control, zoning, and system management applications.\u003c\/p\u003e\n\n\u003cp\u003eExplore our range of Honeywell heating controls and accessories for precise temperature management, reliable system operation, and energy-efficient heating performance.\u003c\/p\u003e","products":[{"product_id":"honeywell-home-t6r-wireless-smart-stand-mounted-thermostat","title":"Honeywell Home T6R Wireless Smart Table Stand Heating Thermostat for Central Heating \u0026 Hot Water","description":"\u003cp\u003eTake control of your home heating thermostat and stored hot water systems with the Honeywell Home T6R Wireless Smart Thermostat, designed for convenient table stand installation. Featuring advanced smart technology with Wi-Fi connectivity, this intuitive thermostat lets you manage your heating and hot water schedules easily from the thermostat itself or remotely via your smartphone or tablet.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless connectivity\u003c\/strong\u003e – Easily place the thermostat anywhere in your home using the included table stand; connects to your boiler or heat pump wirelessly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen interface\u003c\/strong\u003e – Large, high-contrast LCD display with simple, recognisable icons and easy navigation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart app control\u003c\/strong\u003e – Use the Honeywell Home (Resideo) app to remotely adjust settings and monitor your heating and hot water from anywhere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot Water Control\u003c\/strong\u003e – Compatible with Sundial S, Y and W plan stored hot water systems with a hot water boost function and geo-fencing based on your location.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScheduling flexibility\u003c\/strong\u003e – Offers 7-day, 5\/2 day, or daily scheduling with up to 6 time periods per day for both heating and hot water separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeo-fencing\u003c\/strong\u003e – Automatically adjusts heating and hot water based on your home's occupancy detected via your smartphone location to save energy and increase comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdaptive Fuzzy Logic\u003c\/strong\u003e – Uses intelligent control algorithms such as OpenTherm, TPI, and optimum start\/stop for efficient boiler operation and energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e – Works with 24–230V on\/off boilers, OpenTherm® combi boilers, heat pumps, and zone valve systems (not for electric heating 240V).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug and play installation\u003c\/strong\u003e – Includes a 2-channel wireless receiver with flexible mounting options and simple wiring setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply\u003c\/strong\u003e – Supplied with a 5V DC power adapter for reliable operation (no batteries required).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Saving Trust Recommended\u003c\/strong\u003e – Helps reduce energy costs by optimising home heating control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable style=\"width: 100%; height: 293.906px;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 19.5938px;\"\u003eModel Number (MPN)\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 19.5938px;\"\u003eY6H920RW4026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 39.1875px;\"\u003eDimensions (Thermostat WxHxD)\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 39.1875px;\"\u003e108 x 103 x 68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 19.5938px;\"\u003eDisplay\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 19.5938px;\"\u003eHigh contrast colour PMVA touchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 39.1875px;\"\u003eTemperature Setting Range\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 39.1875px;\"\u003e5°C to 37°C (0.5°C increments)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 39.1875px;\"\u003eScheduling\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 39.1875px;\"\u003e7 day, 5\/2 day, daily; up to 6 time periods per day per function (heating \u0026amp; hot water)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 19.5938px;\"\u003eControl Type\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 19.5938px;\"\u003eWireless, 2-channel receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 19.5938px;\"\u003ePower Supply\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 19.5938px;\"\u003e5V DC adapter (230V mains powered receiver)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 19.5938px;\"\u003eConnectivity\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 19.5938px;\"\u003eWi-Fi IEEE 802.11 b\/g\/n (2.4 GHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 39.1875px;\"\u003eCompatible Systems\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 39.1875px;\"\u003eGas boilers, combi boilers, heat pumps, zone valve heating systems (excluding 240V electric heating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 28.4236%; height: 39.1875px;\"\u003eFeatures\u003c\/th\u003e\n\u003ctd style=\"width: 68.7193%; height: 39.1875px;\"\u003eGeo-fencing, HomeKit, Alexa, Google Assistant support, OpenTherm, TPI, Optimum Start\/Stop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eInstallation \u0026amp; Usage\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eIdeal for controlling central heating and stored hot water systems in residential properties.\u003c\/li\u003e\n\u003cli\u003eWireless table stand design allows flexible positioning without wiring constraints.\u003c\/li\u003e\n\u003cli\u003eReceiver box supports simple, secure installation with mounting on wall or electrical box.\u003c\/li\u003e\n\u003cli\u003eCompatible with Apple HomeKit, Amazon Alexa, Google Assistant, and IFTTT for smart home integration.\u003c\/li\u003e\n\u003cli\u003ePowerful app features allow multi-user access and scheduling adjustments on the go.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBox Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eHoneywell Home T6R Wireless Smart Thermostat with Table Stand\u003c\/li\u003e\n\u003cli\u003eWireless 2-channel Receiver Box\u003c\/li\u003e\n\u003cli\u003e5V DC Power Adapter with UK plug\u003c\/li\u003e\n\u003cli\u003eWall mounting hardware and user manuals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eTransform your home heating control with the Honeywell Home T6R Wireless Smart Thermostat – combining modern smart functionality with ease of use and flexible installation.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":57977935298909,"sku":"Y6H920RW4026","price":155.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeT6RWirelessSmartStandThermostat.jpg?v=1765964959"},{"product_id":"honeywell-home-t6r-wireless-smart-wall-mounted-thermostat","title":"Honeywell Home T6R Wall Mounted Wireless Smart Thermostat with Hot Water Control","description":"\u003cp\u003eTake full control of your home's heating and stored hot water systems with the Honeywell Home T6R Wall Mounted Wireless Smart Thermostat. Featuring intuitive touchscreen operation, Wi-Fi connectivity, and advanced scheduling options, this thermostat provides convenient and energy-efficient control designed for UK homes.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless connectivity\u003c\/strong\u003e – Wall-mounted smart thermostat communicates via a 2-channel receiver that can be mounted on the wall or in a wall box for flexible installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTouchscreen interface\u003c\/strong\u003e – High-contrast PMVA colour display with easy navigation through simple icons and dynamic text.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating and hot water control\u003c\/strong\u003e – Supports central heating and stored hot water systems, compatible with Sundial S, Y, and W plan configurations with on\/off control (not suitable for electric 240V heating).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced scheduling\u003c\/strong\u003e – Offers 7-day, 5\/2 day, or single day programming with up to 6 time periods per day for heating, plus 3 ON periods per day for hot water control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart features \u0026amp; app control\u003c\/strong\u003e – Manage settings remotely via the Honeywell Home app; supports geofencing to adjust heating and hot water based on your location.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent control algorithms\u003c\/strong\u003e – Includes adaptive fuzzy logic, OpenTherm compatibility, TPI (Time Proportional and Integral) control, and optimum start\/stop to optimise efficiency and comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome automation integration\u003c\/strong\u003e – Compatible with Apple HomeKit, Amazon Alexa, Google Home, and IFTTT for seamless smart home connectivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e‘In use’ confirmation\u003c\/strong\u003e – Visual indicators with flame and hot water demand symbols for at-a-glance system status.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e240V powered\u003c\/strong\u003e – Reliable mains power supply, removing the need for batteries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy installation\u003c\/strong\u003e – Receiver provides flexible wiring from below or behind, simplifying the setup for installers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Number (MPN)\u003c\/th\u003e\n\u003ctd\u003eY6H920RW5031\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN Code\u003c\/th\u003e\n\u003ctd\u003e5025121380171\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (WxHxD)\u003c\/th\u003e\n\u003ctd\u003e108 x 103 x 68 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003eHigh contrast colour PMVA touchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTemperature Setting Range\u003c\/th\u003e\n\u003ctd\u003e5°C to 37°C (0.5°C increments)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eScheduling Modes\u003c\/th\u003e\n\u003ctd\u003e7 day, 5\/2 day, or single day with up to 6 heating time\/temperature periods and 3 hot water ON periods\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e230 V mains powered (no batteries required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCommunication\u003c\/th\u003e\n\u003ctd\u003eWireless with 2-channel receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003ctd\u003e24-230V on\/off boilers, OpenTherm® combi boilers, heat pumps, zone valve systems, Sundial plans S, Y, and W (hot water control)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSmart Home Integration\u003c\/th\u003e\n\u003ctd\u003eApple HomeKit, Amazon Alexa, Google Home, IFTTT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eInstallation \u0026amp; Usage\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eDesigned for UK residential heating and stored hot water systems requiring wireless, flexible control.\u003c\/li\u003e\n\u003cli\u003eReceiver can be mounted on the wall or in a wall box with versatile wiring options for easier installation.\u003c\/li\u003e\n\u003cli\u003eRemote control and scheduling through the Honeywell Home app for iOS and Android devices.\u003c\/li\u003e\n\u003cli\u003eSuitable for homes using gas boilers, heat pumps, or zone valve controls.\u003c\/li\u003e\n\u003cli\u003eSupports geo-fencing for enhanced energy savings based on occupancy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBox Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eHoneywell Home T6R Wall Mounted Wireless Thermostat\u003c\/li\u003e\n\u003cli\u003e2-Channel Wireless Receiver with mounting accessories\u003c\/li\u003e\n\u003cli\u003e230V Power Adapter\u003c\/li\u003e\n\u003cli\u003eUser and Installation Manuals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eTake full command of your home's heating and hot water with the reliable, smart, and energy-efficient Honeywell Home T6R Wall Mounted Thermostat – perfect for modern British homes embracing smart technology.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":57977935462749,"sku":"Y6H920RW5031","price":147.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/T6R-Thermostat-Only-Stand-Mounted.jpg?v=1765964959"},{"product_id":"honeywell-small-linear-thermoelectric-actuator-with-indicator-mt4-230-nc","title":"Honeywell Small Linear Thermoelectric Actuator with Indicator MT4-230-NC","description":"\u003cp\u003eThe Honeywell MT4-230-NC Small Linear Thermoelectric Actuator offers precise and reliable operation for valves used in room and zone heating applications. Designed for noiseless, long-term performance, this compact actuator is perfect for controlling heating and cooling valves in fan coil units, radiators, floor heating systems, and manifolds.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel MT4-230-NC\u003c\/strong\u003e – Normally closed actuator compatible with 230V mains supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual position indicator\u003c\/strong\u003e – Red indicator behind the face window shows valve position and type of action (NO or NC) for easy monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoiseless operation\u003c\/strong\u003e – Silent performance suitable for residential and commercial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable long-term operation\u003c\/strong\u003e – Robust construction ensures durability and consistent function.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact design\u003c\/strong\u003e – Ideal for installation in limited space and on standard M30 x 1.5 valve fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-in cable\u003c\/strong\u003e – Simplifies wiring and servicing with easy installation and maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater-protected housing\u003c\/strong\u003e – IP44 rated for protection in all mounting positions, suitable for heating system environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverload protection\u003c\/strong\u003e – 4 kV surge protection on 230V models for enhanced electrical safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation modes\u003c\/strong\u003e – Supports two-position (on\/off) or pulse width modulation (PWM) control for flexible heating and cooling modulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnap-on valve adapter\u003c\/strong\u003e – Tool-free mounting for fast and secure installation on thermostatic radiator valves and valve inserts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel Number (MPN)\u003c\/th\u003e\n\u003ctd\u003eMT4-230-NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEAN Code\u003c\/th\u003e\n\u003ctd\u003e4019837107307\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e230 V AC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStroke Length\u003c\/th\u003e\n\u003ctd\u003e4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eThermoelectric linear actuator, normally closed (NC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProtection Rating\u003c\/th\u003e\n\u003ctd\u003eIP44 water protection in any mounting position\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eFits standard M30 x 1.5 valve mountings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperation Modes\u003c\/th\u003e\n\u003ctd\u003eTwo-position (on\/off) or PWM control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003eCompact size suitable for limited space installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverload Protection\u003c\/th\u003e\n\u003ctd\u003e4 kV surge protection on 230V models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eInstallation \u0026amp; Usage\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePerfect for use in heating and cooling systems including fan coil units, radiators, underfloor heating manifolds, chilled ceilings, and convectors.\u003c\/li\u003e\n\u003cli\u003eSnap-on mounting adapter makes installation tool-free and easy to replace or service.\u003c\/li\u003e\n\u003cli\u003eCompatible with thermostatic radiator valves, motorised valve inserts and manifold systems using M30 x 1.5 fittings.\u003c\/li\u003e\n\u003cli\u003eRecommended for precise zone control with time-controlled or pulse width modulation regulation.\u003c\/li\u003e\n\u003cli\u003eEnsure professional installation for safe electrical connection and optimal system performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBox Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHoneywell MT4-230-NC Small Linear Thermoelectric Actuator\u003c\/li\u003e\n\u003cli\u003eIntegrated visual position indicator\u003c\/li\u003e\n\u003cli\u003ePlug-in cable for easy wiring\u003c\/li\u003e\n\u003cli\u003eValve adapter for snap-on mounting\u003c\/li\u003e\n\u003cli\u003eUser manual and installation guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Honeywell MT4-230-NC is a dependable, compact actuator designed for noiseless valve operation with easy installation and clear position indication, ideal for upgrading or maintaining efficient heating and cooling systems in UK homes and commercial properties.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":57977935528285,"sku":"MT4-230-NC","price":17.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellSmallLinearThermoelectricActuatorwithIndicatorMT4-230-NC.jpg?v=1754216687"},{"product_id":"honeywell-2-port-motorised-valve-22mm-v4043h1056-u-hw22","title":"Honeywell Home V4043H1056 22mm 2-Port Motorised Zone Valve — S-Plan Y-Plan Central Heating Zone Valve","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eHoneywell Home V4043H1056\/U\u003c\/strong\u003e is a \u003cstrong\u003e22mm two-port motorised zone valve\u003c\/strong\u003e for domestic and light commercial central heating systems — the most widely installed zone valve in the UK, standard across S-plan, Y-plan, and S-plan-plus wiring configurations. Motor open and spring return, with a \u003cstrong\u003enormally closed fail-safe position\u003c\/strong\u003e (valve closes when de-energised), a \u003cstrong\u003epotential-free SPST end switch\u003c\/strong\u003e for boiler and pump control, and a \u003cstrong\u003ereplaceable powerhead that does not require draining the system\u003c\/strong\u003e. Manual lever for filling and draining. 1 metre heat-resistant flying lead. Compatible with all standard wiring centres, programmers, and zone controllers. Maximum static pressure \u003cstrong\u003e8.6 bar\u003c\/strong\u003e; fluid temperature \u003cstrong\u003e+5°C to +88°C\u003c\/strong\u003e.\n  \u003c\/p\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ S-Plan \u0026amp; Y-Plan Use\u003c\/strong\u003e — In an S-plan system (the most common UK configuration), two V4043H1056 zone valves are installed: one on the heating circuit and one on the hot water circuit. Each valve's end switch fires the boiler and runs the pump only when that zone is calling, providing independent control of heating and hot water. In a Y-plan configuration a single \u003cstrong\u003ethree-port mid-position valve\u003c\/strong\u003e is used instead — the V4043H1056 is a two-port (on\/off) valve, not a mid-position valve.\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Motor Open, Spring Return — Fail-Safe Closed\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe V4043H uses a \u003cstrong\u003emotor to open the valve and a return spring to close it\u003c\/strong\u003e. When the wiring centre calls for heat and sends power to the valve, the motor drives the valve open over approximately 12 seconds; when the call ends and power is removed, the return spring snaps the valve closed in about 5–6 seconds — no electrical power required to close. This \u003cstrong\u003enormally closed, fail-safe design\u003c\/strong\u003e means that in the event of a power failure or wiring fault, the valve defaults to closed, preventing uncontrolled heating circulation.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Potential-Free End Switch — Boiler \u0026amp; Pump Control\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003epotential-free (volt-free) auxiliary end switch\u003c\/strong\u003e closes as the valve reaches its fully open position. This switch signal is used to fire the boiler and\/or start the circulating pump — ensuring the boiler only fires when at least one zone valve is fully open and water is circulating. This is the fundamental boiler interlock mechanism in S-plan and Y-plan wiring configurations. The end switch must be wired to the boiler's live connection (via the wiring centre) to achieve Part L-compliant boiler interlock.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Replaceable Powerhead — No Drain-Down\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003emotor head (powerhead) can be removed and replaced without draining the heating system\u003c\/strong\u003e. The valve body remains in the pipework; the motorised head clips or screws on and off independently. If the motor fails — by far the most common V4043 failure — the entire valve does not need to be cut out of the pipework. The powerhead can be swapped in minutes with the system full and under pressure, making maintenance on a live system fast and cost-effective.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Manual Lever — Filling and Draining\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eA \u003cstrong\u003emanual lever on the valve body\u003c\/strong\u003e allows the valve to be held open manually when filling or draining the heating system — without requiring electrical power to the actuator. This is essential during commissioning (the system needs to circulate water for flushing and chemical treatment) and during drain-down for maintenance on other components. Push the lever to open manually; release to allow the return spring to close.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Quiet Operation — 5W Power Consumption\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe synchronous motor is designed for \u003cstrong\u003enear-silent operation\u003c\/strong\u003e — the only noise during opening is a brief mechanical engagement, not a continuous motor whine. Once fully open, the motor stalls and the end switch holds the boiler on; there is no continuous motor running sound during the heating period. At only \u003cstrong\u003e5W power consumption\u003c\/strong\u003e, the valve adds negligible electrical load — far less than the boiler's control electronics.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 22mm Compression — Industry Standard\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eStandard \u003cstrong\u003e22mm compression fittings\u003c\/strong\u003e — the V4043H is the most widely installed motorised zone valve in the UK and is the valve that all standard wiring centre diagrams, S-plan and Y-plan configurations, and installer training are based around. Being the default component in UK heating design means replacement availability is guaranteed and any qualified plumber or heating engineer will be able to install, wire, and commission it correctly without reference to unusual procedures.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:8px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ Part No.\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHoneywell Home (Resideo) — \u003cstrong\u003eV4043H1056\/U\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eConnection Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e22mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNumber of Ports\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2-port (on\/off)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDe-energised State\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003eNormally CLOSED\u003c\/strong\u003e (spring return)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAction\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eMotor open — spring return\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e220–240V AC, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5W\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEnd Switch Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSPST — potential-free\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSwitch Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e250VAC, 4A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOpening Time\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e12 seconds (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eClosing Time\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5–6 seconds (spring return)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Static Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e8.6 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Differential Pressure (close-off)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.55 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eKv Value\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e6.9\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFluid Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e+5°C to +88°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Ambient Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e+50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eElectrical Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.0m heat-resistant flying lead\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e98 × 112 × 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eFlow Direction\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003eAs per arrow on valve body\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62645431664989,"sku":"V4043H1056","price":79.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellV4043H1056U2PortMotorisedZoneValve22mmV4043H1056U.jpg?v=1764917360"},{"product_id":"honeywell-home-28mm-2-port-motorised-zone-valve-v4043h1106-u","title":"Honeywell Home V4043H1106 28mm 2-Port Motorised Zone Valve — Large Bore Central Heating Zone Control","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eHoneywell Home V4043H1106\/U\u003c\/strong\u003e is a \u003cstrong\u003e28mm two-port motorised zone valve\u003c\/strong\u003e for domestic and light commercial central heating systems requiring larger-bore pipework — the 28mm version of the industry-standard V4043H series. Motor open and spring return, with a \u003cstrong\u003enormally closed fail-safe position\u003c\/strong\u003e, a \u003cstrong\u003epotential-free SPST end switch\u003c\/strong\u003e for boiler and pump control, and a \u003cstrong\u003ereplaceable powerhead that does not require draining the system\u003c\/strong\u003e. Suitable for use on main heating flow and return pipework, high-flow primary circuits, and larger domestic installations where 28mm pipework is specified. Manual lever for filling and draining. 1 metre heat-resistant flying lead. Maximum static pressure \u003cstrong\u003e8.6 bar\u003c\/strong\u003e; Kv value \u003cstrong\u003e8.6\u003c\/strong\u003e; fluid temperature \u003cstrong\u003e+5°C to +88°C\u003c\/strong\u003e.\n  \u003c\/p\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ 22mm vs 28mm — When to use the 28mm valve\u003c\/strong\u003e\u003cbr\u003e\n    The \u003cstrong\u003e22mm V4043H1056\u003c\/strong\u003e is specified for the majority of domestic S-plan and Y-plan zone control applications on standard 22mm branch pipework. The \u003cstrong\u003e28mm V4043H1106\u003c\/strong\u003e is specified where the zone circuit pipework is 28mm — typically on the main heating flow and return in larger properties, heat pump primary circuits, underfloor heating manifold feeds, or any installation where a larger Kv is needed to avoid excessive pressure drop across the zone valve.\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Motor Open, Spring Return — Fail-Safe Closed\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe V4043H uses a \u003cstrong\u003emotor to open the valve and a return spring to close it\u003c\/strong\u003e. When the wiring centre calls for heat and sends power to the valve, the motor drives the valve open over approximately 12 seconds; when the call ends and power is removed, the return spring snaps the valve closed in about 5–6 seconds — no electrical power required to close. This \u003cstrong\u003enormally closed, fail-safe design\u003c\/strong\u003e means that in the event of a power failure or wiring fault, the valve defaults to closed, preventing uncontrolled heating circulation.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Potential-Free End Switch — Boiler \u0026amp; Pump Control\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003epotential-free (volt-free) auxiliary end switch\u003c\/strong\u003e closes as the valve reaches its fully open position. This switch signal is used to fire the boiler and\/or start the circulating pump — ensuring the boiler only fires when at least one zone valve is fully open and water is circulating. This is the fundamental boiler interlock mechanism in S-plan and Y-plan wiring configurations. The end switch must be wired to the boiler's live connection (via the wiring centre) to achieve Part L-compliant boiler interlock. The 28mm body is suited to \u003cstrong\u003elarger primary circuits, high-flow systems, and main heating flow and return pipework\u003c\/strong\u003e where greater Kv capacity is required.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Replaceable Powerhead — No Drain-Down\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003emotor head (powerhead) can be removed and replaced without draining the heating system\u003c\/strong\u003e. The valve body remains in the pipework; the motorised head clips or screws on and off independently. If the motor fails — by far the most common V4043 failure — the entire valve does not need to be cut out of the pipework. The powerhead can be swapped in minutes with the system full and under pressure, making maintenance on a live system fast and cost-effective.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Manual Lever — Filling and Draining\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eA \u003cstrong\u003emanual lever on the valve body\u003c\/strong\u003e allows the valve to be held open manually when filling or draining the heating system — without requiring electrical power to the actuator. This is essential during commissioning (the system needs to circulate water for flushing and chemical treatment) and during drain-down for maintenance on other components. Push the lever to open manually; release to allow the return spring to close.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Quiet Operation — 5W Power Consumption\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe synchronous motor is designed for \u003cstrong\u003enear-silent operation\u003c\/strong\u003e — the only noise during opening is a brief mechanical engagement, not a continuous motor whine. Once fully open, the motor stalls and the end switch holds the boiler on; there is no continuous motor running sound during the heating period. At only \u003cstrong\u003e5W power consumption\u003c\/strong\u003e, the valve adds negligible electrical load — far less than the boiler's control electronics.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 28mm Compression — Industry Standard\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eStandard \u003cstrong\u003e28mm compression fittings\u003c\/strong\u003e — the V4043H is the most widely installed motorised zone valve in the UK and is the valve that all standard wiring centre diagrams, S-plan and Y-plan configurations, and installer training are based around. Being the default component in UK heating design means replacement availability is guaranteed and any qualified plumber or heating engineer will be able to install, wire, and commission it correctly without reference to unusual procedures.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:8px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ Part No.\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHoneywell Home (Resideo) — \u003cstrong\u003eV4043H1106\/U\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eConnection Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e28mm compression\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eNumber of Ports\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2-port (on\/off)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDe-energised State\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003eNormally CLOSED\u003c\/strong\u003e (spring return)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAction\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eMotor open — spring return\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e220–240V AC, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5W\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEnd Switch Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSPST — potential-free\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOpening Time\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e12 seconds (nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eClosing Time\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5–6 seconds (spring return)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Static Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e8.6 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Differential Pressure (close-off)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.45 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eKv Value\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e8.6\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFluid Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e+5°C to +88°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Ambient Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e+52°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eElectrical Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.0m heat-resistant flying lead, 6-core\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e98 × 117 × 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eFlow Direction\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003eAs per arrow on valve body\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799246328157,"sku":"V4043H1106","price":109.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellV4043H1056U2PortMotorisedZoneValve22mmV4043H1056U.jpg?v=1764917360"},{"product_id":"honeywell-home-22mm-motorised-2-port-zone-valve-2-pack","title":"Honeywell Home V4043H1056 22mm 2-Port Motorised Zone Valve Twin Pack — 2 Valves S-Plan Central Heating Zone Control","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    This is a \u003cstrong\u003etwin pack of two Honeywell Home V4043H1056\/U 22mm motorised zone valves\u003c\/strong\u003e — the most commonly specified zone valve bundle for a complete S-plan central heating installation. In a standard S-plan configuration, \u003cstrong\u003eone valve is installed on the heating circuit and one on the hot water circuit\u003c\/strong\u003e, providing independent motorised control of each zone with individual end switches that fire the boiler and pump only when needed. Buying as a twin pack ensures a matched pair with identical specifications and wiring — eliminating any uncertainty about compatibility between a new valve and an existing one. Each valve features motor-open\/spring-return action, a normally closed fail-safe position, a potential-free SPST end switch, replaceable powerhead, manual lever, and 1 metre heat-resistant flying lead.\n  \u003c\/p\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ Why Two Valves? — S-Plan Explained\u003c\/strong\u003e\u003cbr\u003e\n    In an \u003cstrong\u003eS-plan\u003c\/strong\u003e (or S-plan Plus) central heating system — by far the most common UK configuration — two separate two-port zone valves independently control the flow of water to the heating circuit (radiators or UFH) and the hot water circuit (cylinder coil). When a thermostat calls for heat, it signals the appropriate zone valve to open; as the valve reaches full open, its end switch fires the boiler and starts the pump. When demand is met, the valve closes, the end switch opens, and the boiler shuts down. This provides \u003cstrong\u003eindependent time and temperature control of heating and hot water\u003c\/strong\u003e, satisfying Part L of the Building Regulations boiler interlock requirements. Two V4043H1056 valves and a suitable wiring centre are the core of this system.\n  \u003c\/div\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ Y-Plan Note\u003c\/strong\u003e — If your system uses a \u003cstrong\u003eY-plan configuration\u003c\/strong\u003e (single mid-position valve), you require one \u003cstrong\u003ethree-port mid-position valve\u003c\/strong\u003e (such as the Honeywell V4073A) rather than two two-port valves. The V4043H1056 is a two-port (on\/off) valve — it is not suitable for Y-plan use without a full S-plan conversion.\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Motor Open, Spring Return — Fail-Safe Closed\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe V4043H uses a \u003cstrong\u003emotor to open the valve and a return spring to close it\u003c\/strong\u003e. When the wiring centre calls for heat and sends power to the valve, the motor drives the valve open over approximately 12 seconds; when the call ends and power is removed, the return spring snaps the valve closed in about 5–6 seconds — no electrical power required to close. This \u003cstrong\u003enormally closed, fail-safe design\u003c\/strong\u003e means that in the event of a power failure or wiring fault, the valve defaults to closed, preventing uncontrolled heating circulation.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Potential-Free End Switch — Boiler \u0026amp; Pump Control\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003epotential-free (volt-free) auxiliary end switch\u003c\/strong\u003e closes as the valve reaches its fully open position. This switch signal is used to fire the boiler and\/or start the circulating pump — ensuring the boiler only fires when at least one zone valve is fully open and water is circulating. This is the fundamental boiler interlock mechanism in S-plan and Y-plan wiring configurations. The end switch must be wired to the boiler's live connection (via the wiring centre) to achieve Part L-compliant boiler interlock.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Replaceable Powerhead — No Drain-Down\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003emotor head (powerhead) can be removed and replaced without draining the heating system\u003c\/strong\u003e. The valve body remains in the pipework; the motorised head clips or screws on and off independently. If the motor fails — by far the most common V4043 failure — the entire valve does not need to be cut out of the pipework. The powerhead can be swapped in minutes with the system full and under pressure, making maintenance on a live system fast and cost-effective.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Manual Lever — Filling and Draining\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eA \u003cstrong\u003emanual lever on the valve body\u003c\/strong\u003e allows the valve to be held open manually when filling or draining the heating system — without requiring electrical power to the actuator. This is essential during commissioning (the system needs to circulate water for flushing and chemical treatment) and during drain-down for maintenance on other components. Push the lever to open manually; release to allow the return spring to close.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Quiet Operation — 5W Power Consumption\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe synchronous motor is designed for \u003cstrong\u003enear-silent operation\u003c\/strong\u003e — the only noise during opening is a brief mechanical engagement, not a continuous motor whine. Once fully open, the motor stalls and the end switch holds the boiler on; there is no continuous motor running sound during the heating period. At only \u003cstrong\u003e5W power consumption\u003c\/strong\u003e, the valve adds negligible electrical load — far less than the boiler's control electronics.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 22mm Compression — Industry Standard\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eStandard \u003cstrong\u003e22mm compression fittings\u003c\/strong\u003e — the V4043H is the most widely installed motorised zone valve in the UK and is the valve that all standard wiring centre diagrams, S-plan and Y-plan configurations, and installer training are based around. Being the default component in UK heating design means replacement availability is guaranteed and any qualified plumber or heating engineer will be able to install, wire, and commission it correctly without reference to unusual procedures.\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eSpecifications — Each Valve (× 2 supplied)\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:8px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003ePack Contents\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e2× Honeywell Home V4043H1056\/U\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eConnection Size\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e22mm compression (per valve)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDe-energised State\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003eNormally CLOSED\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e220–240V AC, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5W per valve\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEnd Switch\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSPST potential-free — 250VAC, 4A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOpening \/ Closing Time\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e12 sec open \/ 5–6 sec close (spring return)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Static Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e8.6 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Differential Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.55 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eKv Value\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e6.9\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFluid Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e+5°C to +88°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eElectrical Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1.0m heat-resistant flying lead (per valve)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e98 × 112 × 60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eTypical Application\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003eS-plan: one on CH circuit + one on HW circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799251865949,"sku":"V4043H1056\/TW","price":127.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHome22mmMotorised2PortZoneValvetwinPack.jpg?v=1764917361"},{"product_id":"honeywell-home-22mm-motorised-3-port-mid-position-valve-v4073a1039-u-y-plan-diverter-valve","title":"Honeywell Home 22mm Motorised 3 Port Mid-Position Valve - V4073A1039\/U Y-Plan Diverter Valve","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home V4073A1039\/U\u003c\/strong\u003e is a \u003cstrong\u003e22 mm 3 port mid-position motorised diverter valve\u003c\/strong\u003e designed for conventional fully pumped central heating systems with both radiator and hot water cylinder circuits. This Sundial Y-plan valve provides precise flow control between heating, hot water, and simultaneous operation modes using room and cylinder thermostats.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-position operation:\u003c\/strong\u003e Port A (heating), Port B (hot water), Port AB (mid-position for both).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring return action\u003c\/strong\u003e defaults to hot water priority on power failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowerhead replaceable without system drain-down\u003c\/strong\u003e for easy maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual lever\u003c\/strong\u003e for system filling and draining in MAN OPEN position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical output\u003c\/strong\u003e to control boiler and pump operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet operation with minimal 6 W power consumption\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Home V4073A1039\/U?\u003c\/h2\u003e\n\u003cp\u003eIndustry standard for \u003cstrong\u003eY-plan fully pumped systems\u003c\/strong\u003e, this valve offers proven reliability with serviceable design and comprehensive electrical interlock for safe boiler\/pump operation.\u003c\/p\u003e\n\u003cp\u003ePerfect for small to medium domestic installations requiring independent temperature control of heating and hot water circuits.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSundial Y-plan systems\u003c\/strong\u003e with room and cylinder thermostats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully pumped conventional heating\u003c\/strong\u003e installations up to 90,000 BTU (26 kW).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall to medium homes\u003c\/strong\u003e with 22 mm pipework.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eV4073A 3 Port Mid-Position Valve\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eV4073A1039\/U\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5023220400356\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnections: \u003cstrong\u003e22 mm compression\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eValve Type: \u003cstrong\u003e3 port mid-position diverter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBody Material: \u003cstrong\u003eBrass\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupply Voltage: \u003cstrong\u003e230 V AC, 50 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Consumption: \u003cstrong\u003e6 W\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitch Rating: \u003cstrong\u003e2.2 A (230 V AC resistive\/inductive)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTiming: \u003cstrong\u003eMotorised movement ~14 seconds\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFluid Temperature Range: \u003cstrong\u003e5-88 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax Differential Pressure: \u003cstrong\u003e0.6 bar\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax Static Pressure: \u003cstrong\u003e8.6 bar\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable: \u003cstrong\u003e1 m heat-resistant flying lead (8-core)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e1.3 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e1 year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Wiring\u003c\/h2\u003e\n\u003cp\u003eDesigned for horizontal or vertical pipe mounting with powerhead positioned above horizontal pipe centreline. Compatible with Honeywell Sundial Plan Wiring Centre or 10-way junction box. 8-core cable provides dedicated connections for grey (A), orange (B), white (AB) control wires plus power and switch outputs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799272149341,"sku":"V4073A1039","price":113.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeMotorised3PortMid-PositionValve.jpg?v=1764917727"},{"product_id":"honeywell-home-28mm-motorised-3-port-mid-position-valve-v4073a1088-u-y-plan-diverter-valve","title":"Honeywell Home 28mm Motorised 3 Port Mid-Position Valve | V4073A1088\/U Y-Plan Diverter Valve","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home V4073A1088\/U\u003c\/strong\u003e is a \u003cstrong\u003e28 mm 3 port mid-position motorised diverter valve\u003c\/strong\u003e for fully pumped conventional central heating systems controlling both radiator and hot water cylinder circuits. Designed for small to medium installations, it works with room and cylinder thermostats in Sundial Y-plan configurations.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-position operation:\u003c\/strong\u003e Port A (heating), Port B (hot water), Port AB (mid-position for simultaneous flow).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring return action\u003c\/strong\u003e prioritises hot water on power failure for safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowerhead replaceable without draining\u003c\/strong\u003e the complete heating system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual lever\u003c\/strong\u003e for easy system filling and draining in MAN OPEN position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical output\u003c\/strong\u003e controls boiler and pump operation automatically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuiet operation, minimal 6 W power consumption\u003c\/strong\u003e suitable for domestic use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Home V4073A1088\/U?\u003c\/h2\u003e\n\u003cp\u003eProven industry standard for \u003cstrong\u003eY-plan fully pumped heating systems\u003c\/strong\u003e, offering reliable diverter operation with service-friendly design and comprehensive electrical interlock.\u003c\/p\u003e\n\u003cp\u003eHandles systems up to 90,000 BTU (26 kW) capacity with robust brass construction for long service life.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSundial Y-plan installations\u003c\/strong\u003e with independent heating\/hot water temperature control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium-sized domestic heating systems\u003c\/strong\u003e with 28 mm primary pipework.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConventional fully pumped boilers\u003c\/strong\u003e requiring precise flow diversion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eV4073A 3 Port Mid-Position Valve\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eV4073A1088\/U\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5023220401315\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnections: \u003cstrong\u003e28 mm compression\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eValve Type: \u003cstrong\u003e3 port mid-position diverter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBody Material: \u003cstrong\u003eBrass\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupply Voltage: \u003cstrong\u003e230 V AC, 50 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Consumption: \u003cstrong\u003e6 W\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitch Rating: \u003cstrong\u003e2.2 A @ 230 V AC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMotor Timing: \u003cstrong\u003e≈ 14 seconds\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFluid Temperature: \u003cstrong\u003e5-88 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax Differential Pressure: \u003cstrong\u003e0.6 bar\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax Static Pressure: \u003cstrong\u003e8.6 bar\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions (HxWxD): \u003cstrong\u003e137 x 117 x 60 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e1.3 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e1 year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Wiring\u003c\/h2\u003e\n\u003cp\u003eHorizontal or vertical pipe mounting with powerhead above horizontal centreline. Uses 8-core flying lead for connection to Sundial Plan Wiring Centre or 10-way junction box. Grey (A), orange (B), and white (AB) wires provide precise 3-position control with dedicated power and switch terminals.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799282241885,"sku":"V4073A1088","price":139.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeMotorised3PortMid-PositionValve.jpg?v=1764917727"},{"product_id":"honeywell-home-dt4-black-wired-room-thermostat-dt40bt22-on-off-digital-heating-control","title":"Honeywell Home DT4 Black Wired Room Thermostat | DT40BT22 On\/Off Digital Heating Control","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home DT4 Black Wired Room Thermostat DT40BT22\u003c\/strong\u003e is a modern digital thermostat providing precise room temperature control for heating systems in homes and apartments. Featuring a large clear LED segment display with energy-efficient auto-off technology and simple wake-up button operation, it combines slim design with reliable performance.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-efficient LED display\u003c\/strong\u003e automatically turns off when not in use to save battery life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit captive touch buttons\u003c\/strong\u003e for intuitive operation day or night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in eco-mode\u003c\/strong\u003e reduces room temperature for set periods to save energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuzzy Logic control\u003c\/strong\u003e optimises boiler on\/off cycles for precise temperature maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with hybrid and green systems\u003c\/strong\u003e including heat pumps, zoning, and underfloor heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow battery warning\u003c\/strong\u003e and simple AA battery replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Home DT4 Black?\u003c\/h2\u003e\n\u003cp\u003eModern slim design with proven Honeywell reliability, this thermostat offers straightforward operation for all users while providing advanced energy-saving features and broad system compatibility.\u003c\/p\u003e\n\u003cp\u003eErP Class IV (+2%) rating ensures compliance with current efficiency standards for heating controls.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas boilers, combi boilers, and heat pumps\u003c\/strong\u003e (24-230 V on\/off control).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-port zone valve applications\u003c\/strong\u003e in multi-zone heating systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew installations and replacements\u003c\/strong\u003e in domestic environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eDT4 Black Wired Room Thermostat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eDT40BT22\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5059085002633\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl Type: \u003cstrong\u003eOn\/Off (24-230 V)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x AA batteries (included)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003eApprox. 3.5 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay Range: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor: \u003cstrong\u003e10k NTC thermistor @ 25 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitching Capacity: \u003cstrong\u003e3 A resistive, 1 A inductive\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitch Type: \u003cstrong\u003eSPDT\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass IV (+2 %)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e101 x 101 x 23 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e0.17 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWiring: \u003cstrong\u003eUp to 2.5 mm² terminals\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e2 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eSimple wall-mounted wired installation with flip-up wiring platform. User menu allows heating\/cooling selection, eco offset duration, and frost protection (minimum 5 °C). Installer menu provides cycle rate adjustment, setpoint limits, and factory reset functions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799297806685,"sku":"DT40BT22","price":37.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/dt40bt22-honeywell-dt4-black-wired.jpg?v=1764922186"},{"product_id":"honeywell-home-dt4-white-wired-room-thermostat-dt40wt20-on-off-digital-heating-control","title":"Honeywell Home DT4 White Wired Room Thermostat | DT40WT20 On\/Off Digital Heating Control","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home DT4 White Wired Room Thermostat DT40WT20\u003c\/strong\u003e is a slim, modern digital thermostat for precise room temperature control in homes and apartments. Featuring a large clear LED segment display with energy-efficient auto-off and simple wake-up button, it delivers reliable performance with contemporary styling.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-saving LED display\u003c\/strong\u003e automatically dims when not in use to extend battery life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit touch buttons\u003c\/strong\u003e for easy operation in all lighting conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in eco offset\u003c\/strong\u003e reduces temperature for set periods to save energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuzzy logic control\u003c\/strong\u003e optimises boiler cycling for accurate temperature maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with hybrid systems\u003c\/strong\u003e including heat pumps, zoning, underfloor heating, and zone valves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection\u003c\/strong\u003e maintains minimum 5 °C when off to prevent pipe freezing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Home DT4 White?\u003c\/h2\u003e\n\u003cp\u003eCombines modern aesthetics with proven reliability, offering simple user operation alongside advanced energy-saving features and wide system compatibility.\u003c\/p\u003e\n\u003cp\u003eErP Class IV (+2%) rating meets current heating control efficiency standards with 5-year installer warranty option.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas boilers, combi boilers, heat pumps\u003c\/strong\u003e (24-230 V on\/off control).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone valve systems\u003c\/strong\u003e and multi-zone heating applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew builds and replacements\u003c\/strong\u003e requiring wired wall-mounted thermostats.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eDT4 White Wired Room Thermostat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eDT40WT20\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5059085002619\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl Type: \u003cstrong\u003eOn\/Off (24-230 V)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x AA batteries (included)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003eApprox. 3.5 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay Range: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor Type: \u003cstrong\u003e10k NTC @ 25 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitching Capacity: \u003cstrong\u003e3 A resistive, 1 A inductive\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitch Type: \u003cstrong\u003eSPDT\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass IV (+2 %)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e101 x 101 x 23 mm (HxWxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e0.245 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTerminals: \u003cstrong\u003eUp to 2.5 mm²\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e2 years standard (5 years installer option)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eWall-mounted wired installation with flip-up wiring platform for simple connection. User-friendly menu for heating\/cooling selection, eco settings, and frost protection. Installer configuration includes cycle rate, limits, and system commissioning options.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799311929693,"sku":"DT40WT20","price":33.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/dt40wt20-HoneywellHomeDT4WhiteWiredRoomThermostat.jpg?v=1764922298"},{"product_id":"honeywell-home-dt4-grey-wired-room-thermostat","title":"Honeywell Home DT4 Grey Wired Room Thermostat","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home DT4 Grey Wired Room Thermostat DT40GT21\u003c\/strong\u003e is a contemporary digital thermostat for accurate room temperature control in homes and apartments. With its slim modern design, large clear LED segment display, and energy-efficient auto-off technology, it combines style with simple, intuitive operation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-efficient LED display\u003c\/strong\u003e automatically turns off when not in use to conserve battery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit captive touch buttons\u003c\/strong\u003e for easy operation in any lighting conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated eco-mode\u003c\/strong\u003e provides timed temperature offset for energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuzzy Logic control algorithm\u003c\/strong\u003e optimises boiler operation for precise temperature maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide system compatibility\u003c\/strong\u003e including heat pumps, zoning, underfloor heating, and zone valves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection\u003c\/strong\u003e maintains minimum 5 °C setpoint when system is off.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Home DT4 Grey?\u003c\/h2\u003e\n\u003cp\u003eStylish grey finish complements modern interiors while delivering proven Honeywell reliability and advanced energy-saving functions in a user-friendly package.\u003c\/p\u003e\n\u003cp\u003eErP Class IV (+2%) rating ensures compliance with current heating control efficiency regulations.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas boilers, combi boilers, and heat pumps\u003c\/strong\u003e (24-230 V on\/off control).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone valve applications\u003c\/strong\u003e and multi-zone heating systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew installations and thermostat replacements\u003c\/strong\u003e requiring wired controls.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eDT4 Grey Wired Room Thermostat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eDT40GT21\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5059085002626\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl Type: \u003cstrong\u003eOn\/Off (24-230 V)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x AA batteries (included)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003eApprox. 3.5 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay Range: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor: \u003cstrong\u003e10k NTC thermistor @ 25 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitching Capacity: \u003cstrong\u003e3 A resistive, 1 A inductive\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitch Type: \u003cstrong\u003eSPDT\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass IV (+2 %)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e101 x 101 x 23 mm (HxWxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e105 g\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTerminal Size: \u003cstrong\u003eMax 2.5 mm²\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e2 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eSimple wall-mounted wired installation featuring flip-up wiring platform. User menu configures heating\/cooling modes, eco offset timing, and frost protection. Installer menu enables cycle rate adjustment, setpoint limits, and commissioning settings.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799322251613,"sku":"DT40GT21","price":33.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/dt40gt21-honeywell-dt4-grey-wired.jpg?v=1764918628"},{"product_id":"honeywell-home-dt4r-white-wireless-room-thermostat-receiver-yt42wrft20-rf-digital-heating-control","title":"Honeywell Home DT4R White Wireless Room Thermostat \u0026 Receiver | YT42WRFT20 RF Digital Heating Control","description":"\u003cstyle\u003e\n  .qh-pd { font-family: inherit; font-size: 16px; line-height: 1.65; color: #1a1a2e; }\n  .qh-pd *, .qh-pd *::before, .qh-pd *::after { box-sizing: border-box; }\n\n  .qh-pd .badge-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 1.2rem; }\n  .qh-pd .badge { display: inline-block; font-size: 11px; font-weight: 700; 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margin-bottom: 1.5rem; font-size: 14px; }\n  .qh-pd .spec-table td { padding: 8px 12px; border-bottom: 1px solid #eee; vertical-align: top; background: #fff; }\n  .qh-pd .spec-table tr:nth-child(even) td { background: #faf8f4; }\n  .qh-pd .spec-table td:first-child { font-weight: 600; color: #333; width: 40%; }\n\n  .qh-pd .callout { padding: 0.8rem 1.1rem; border-radius: 0 6px 6px 0; margin: 0.8rem 0; font-size: 14.5px; }\n  .qh-pd .callout-orange { background: #fff3e0; border-left: 4px solid #e8720c; color: #4a2500; }\n  .qh-pd .callout-blue   { background: #e8f4fd; border-left: 4px solid #1565c0; color: #0a2a50; }\n  .qh-pd .callout-green  { background: #e8f5e9; border-left: 4px solid #1b7a40; color: #0a2a18; }\n\n  .qh-pd .faq-item { border-bottom: 1px solid #e8e8e8; padding: 0.75rem 0; }\n  .qh-pd .faq-item:last-child { border-bottom: none; }\n  .qh-pd .faq-q { font-weight: 700; font-size: 15px; color: #1a1a2e; margin-bottom: 0.3rem; }\n  .qh-pd .faq-a { font-size: 14.5px; color: #444; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"qh-pd\"\u003e\n\n  \u003cdiv class=\"badge-row\"\u003e\n    \u003cspan class=\"badge b-red\"\u003eHoneywell Home\u003c\/span\u003e\n    \u003cspan class=\"badge b-navy\"\u003eWireless RF\u003c\/span\u003e\n    \u003cspan class=\"badge b-green\"\u003eevohome Thermostat Compatible\u003c\/span\u003e\n    \u003cspan class=\"badge b-blue\"\u003eOn\/Off Control\u003c\/span\u003e\n    \u003cspan class=\"badge b-orange\"\u003eHeat Pump Ready\u003c\/span\u003e\n    \u003cspan class=\"badge b-grey\"\u003eRelay Receiver Included\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sku-block\"\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eSKU \/ MPN\u003c\/strong\u003e\n      \u003cspan\u003eYT42WRFT20\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eModel Name\u003c\/strong\u003e\n      \u003cspan\u003eDT4R\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eColour\u003c\/strong\u003e\n      \u003cspan\u003eWhite\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eControl Type\u003c\/strong\u003e\n      \u003cspan\u003eOn\/Off (non-modulating)\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eConnectivity\u003c\/strong\u003e\n      \u003cspan\u003eRF 868 MHz wireless\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cp class=\"prod-desc\"\u003e\n    The Honeywell Home DT4R is a battery-powered wireless room thermostat with on\/off control, designed for residential heating and cooling applications in homes and apartments. It is supplied as a complete pack including a basic wireless relay receiver that wires directly to the boiler or appliance — no thermostat cable back to the heat source is needed. The DT4R features a slim, modern design with a large LED segment display, backlit captive-touch buttons, and an auto display-off function to conserve battery life. It uses the Ramses II and Ramses III radio frequency protocol, making it backwards and forwards compatible with the wider Honeywell Home RF ecosystem. The thermostat unit itself can be connected to an evohome multi-zone system; however the relay receiver included in this pack is not compatible with evohome — a separate BDR91A relay receiver is required to integrate the relay function into evohome and other home automation and heating control systems. The DT4R is Resideo's designated successor to the DT92 \/ DT92E range.\n  \u003c\/p\u003e\n\n  \u003cdiv class=\"section-label\"\u003eKey Features\u003c\/div\u003e\n  \u003cul class=\"feat-list\"\u003e\n    \u003cli\u003eComplete wireless pack — thermostat and relay receiver included, ready to install\u003c\/li\u003e\n    \u003cli\u003eNo thermostat wiring required — receiver wires to appliance only; thermostat is fully wireless\u003c\/li\u003e\n    \u003cli\u003eLarge LED segment display — clear temperature and status readout at a glance\u003c\/li\u003e\n    \u003cli\u003eBacklit captive touch buttons — responsive, intuitive interface\u003c\/li\u003e\n    \u003cli\u003eAuto display-off — screen switches off when not in use to extend battery life\u003c\/li\u003e\n    \u003cli\u003eEco mode — temporarily reduces setpoint to lower energy consumption\u003c\/li\u003e\n    \u003cli\u003eBoost mode — temporarily raises setpoint for short periods of extra warmth\u003c\/li\u003e\n    \u003cli\u003eFuzzy logic control — anticipates heat loss for stable, accurate room temperature\u003c\/li\u003e\n    \u003cli\u003eRamses II \u0026amp; III RF protocol — backwards compatible with existing Honeywell Home RF products including BDR91A\u003c\/li\u003e\n    \u003cli\u003eThermostat compatible with evohome multi-zone system and HCC100 underfloor heating controller — included relay receiver is not evohome-compatible (BDR91A required, sold separately)\u003c\/li\u003e\n    \u003cli\u003eDrop-in replacement for DT92, DT92E, DT92E1000\u003c\/li\u003e\n    \u003cli\u003eErP Class IV (+2%) — meets European energy labelling requirements\u003c\/li\u003e\n    \u003cli\u003eUp to 1.5 years battery life from 2 × AA batteries (included)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"in-box\"\u003e\n    \u003ch4\u003eWhat's in the Box\u003c\/h4\u003e\n    \u003cul\u003e\n      \u003cli\u003eHoneywell Home DT4R white wireless room thermostat\u003c\/li\u003e\n      \u003cli\u003eWireless relay receiver (wires to boiler \/ appliance; 230V AC mains powered; not evohome-compatible)\u003c\/li\u003e\n      \u003cli\u003e2 × AA batteries\u003c\/li\u003e\n      \u003cli\u003eWall mounting hardware\u003c\/li\u003e\n      \u003cli\u003eInstallation guide (includes QR code linking to installation videos)\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"callout callout-orange\"\u003e\n    ⚠️ \u003cstrong\u003eIncluded relay receiver is not evohome-compatible:\u003c\/strong\u003e The relay receiver supplied in this pack controls the boiler or appliance for standalone use only. It cannot be connected to or managed by the Honeywell Home evohome system or other home automation and heating control systems. To use the relay with evohome, the \u003cstrong\u003eHoneywell Home BDR91A\u003c\/strong\u003e wireless relay box is required and is available to purchase separately.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section-label\"\u003eSystem Compatibility\u003c\/div\u003e\n  \u003ctable class=\"compat-table\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eApplication \/ System\u003c\/th\u003e\n        \u003cth\u003eCompatible?\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGas or oil combi boiler (230V)\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003ePrimary use case; on\/off switching via included relay receiver\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConventional (heat-only) boiler\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eOn\/off demand switching via included relay receiver\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHeat pump (air-to-water, ground source)\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003e24–230V on\/off signal; heat pump must accept simple on\/off demand input\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e2-port zone valves\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eOn\/off demand control; standard zone valve wiring via receiver\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eUnderfloor heating zone control\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eVia HCC100 multi-zone underfloor heating controller (sold separately)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHoneywell Home evohome\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003e\n\u003cstrong\u003eThermostat only\u003c\/strong\u003e — the DT4R thermostat integrates as a zone thermostat within evohome. The included relay receiver is \u003cstrong\u003enot\u003c\/strong\u003e evohome-compatible; a BDR91A (sold separately) is required to connect the relay to evohome\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSolid fuel boiler\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eOn\/off demand; boiler must accept an external thermostat input\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDirect 240V electric heating\u003c\/td\u003e\n        \u003ctd class=\"cross\"\u003e✗\u003c\/td\u003e\n        \u003ctd\u003eNot compatible — Resideo explicitly states \"not with electric heating \/ 240V\"; use wired DT4 (non-R)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOpenTherm® modulating control\u003c\/td\u003e\n        \u003ctd class=\"cross\"\u003e✗\u003c\/td\u003e\n        \u003ctd\u003eOn\/Off model only — for modulating control specify DT4R modulating variants (YT43 series)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv class=\"section-label\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003cdiv class=\"two-col\"\u003e\n    \u003ctable class=\"spec-table\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eResideo (Honeywell Home)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eDT4R\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSKU \/ MPN\u003c\/td\u003e\n\u003ctd\u003eYT42WRFT20\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eControl Mode\u003c\/td\u003e\n\u003ctd\u003eOn\/Off\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRadio Frequency\u003c\/td\u003e\n\u003ctd\u003e868.0–868.6 MHz ISM band\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRF Range (max)\u003c\/td\u003e\n\u003ctd\u003e30 m in typical residential building\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRF Protocol\u003c\/td\u003e\n\u003ctd\u003eRamses II \/ Ramses III\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eThermostat Power\u003c\/td\u003e\n\u003ctd\u003e2 × AA batteries (included)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eBattery Life\u003c\/td\u003e\n\u003ctd\u003eUp to 1.5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n    \u003ctable class=\"spec-table\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eReceiver Power Supply\u003c\/td\u003e\n\u003ctd\u003e230V AC mains\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAppliance Voltage (Switched)\u003c\/td\u003e\n\u003ctd\u003e24–230V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMax Setpoint\u003c\/td\u003e\n\u003ctd\u003e35°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd\u003e10kΩ @ 25°C NTC thermistor\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eControl Algorithm\u003c\/td\u003e\n\u003ctd\u003eFuzzy logic\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eLED segment (auto-off)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eErP Classification\u003c\/td\u003e\n\u003ctd\u003eClass IV (+2%)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eEMC 2014\/30\/EU · LVD 2014\/35\/EU · R\u0026amp;TTE 1995\/5\/EC\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDisplay Indicators\u003c\/td\u003e\n\u003ctd\u003eHeat, Cool, Wireless signal, Eco, Off, Low battery, Warning\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"callout callout-green\"\u003e\n    ✓ \u003cstrong\u003eDrop-in replacement for DT92 \/ DT92E \/ DT92E1000:\u003c\/strong\u003e The DT4R uses the Ramses II RF protocol and is fully backwards compatible with existing Honeywell Home RF receivers. In most cases the existing receiver can be retained and the DT4R thermostat simply bound to it — the spare receiver from the pack is not required.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"callout callout-blue\"\u003e\n    ℹ️ \u003cstrong\u003eOn\/Off only — not suitable for direct electric heating or OpenTherm® modulating:\u003c\/strong\u003e This model switches a 24–230V on\/off demand signal and cannot modulate heat output. For OpenTherm® modulating control, specify the DT4R modulating range (YT43MRFWT30 white · YT43MRFBT32 black · YT43MRFGT31 grey). For 240V direct electric heating, a wired DT4 variant is required.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section-label\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eDoes this come with a receiver?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes. The YT42WRFT20 is supplied as a complete pack including a wireless relay receiver that wires to the boiler or appliance. No separate receiver purchase is needed for a new standalone installation.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eCan I use the BDR91A with this thermostat?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes. If you need the relay to connect to evohome or other home automation and heating control systems, the Honeywell Home BDR91A is compatible with the DT4R thermostat and is available to purchase separately. The relay receiver included in this pack is for standalone boiler switching only and is not evohome-compatible.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eWill this work with my evohome system?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003ePartially. The DT4R thermostat unit can be integrated as a zone thermostat within an existing Honeywell Home evohome multi-zone system. However, the relay receiver included in this pack is not compatible with evohome — it can only be used for standalone boiler switching. To connect the relay to evohome or other home automation and heating control systems, the Honeywell Home BDR91A wireless relay box is required and is available to purchase separately.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eIs it a direct replacement for the DT92E?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes. Resideo markets the DT4R as the direct successor to the DT92, DT92E, and DT92E1000. Ramses II compatibility means the thermostat will pair with receivers originally installed for those models in most cases.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eCan I use it with a heat pump?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes, for heat pumps that accept a simple on\/off 24–230V switching signal. It is not suitable for heat pumps requiring modulating or OpenTherm® communication — for those, specify the DT4R modulating variants (YT43 series).\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eAre other colours available?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes. The DT4R on\/off wireless range is available in White (YT42WRFT20), Grey (YT42GRFT21), and Black (YT42BRFT22). Modulating wireless variants are available in the same three colours (YT43 series).\u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799327232349,"sku":"YT42WRFT20","price":69.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/yt42wrft20-HoneywellHomeDT4RWhiteRoomThermostatandWirelessReceiver.jpg?v=1764918802"},{"product_id":"honeywell-home-dt4m-white-opentherm-wired-room-thermostat-modulating-digital-heating-control","title":"Honeywell Home DT4M White OpenTherm Wired Room Thermostat | Modulating Digital Heating Control","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home DT4M White OpenTherm Wired Room Thermostat\u003c\/strong\u003e is an advanced modulating thermostat for precise room temperature control with OpenTherm® compatible boilers, heat pumps, and zoning systems. Featuring slim modern design, energy-efficient LED display, and intelligent modulation control for maximum boiler efficiency.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenTherm® modulation\u003c\/strong\u003e reduces boiler cycling and improves energy efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-saving LED display\u003c\/strong\u003e auto-off technology with wake-up button activation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit touch buttons\u003c\/strong\u003e and clear status icons for intuitive user interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in eco offset\u003c\/strong\u003e provides timed temperature reduction for energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuzzy Logic control\u003c\/strong\u003e optimises modulation for accurate temperature maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection\u003c\/strong\u003e maintains minimum 5 °C setpoint when system is off.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Home DT4M White?\u003c\/h2\u003e\n\u003cp\u003eDelivers superior energy efficiency through continuous boiler modulation while maintaining simple user operation and modern aesthetics suitable for contemporary interiors.\u003c\/p\u003e\n\u003cp\u003eErP Class V (+3%) rating with backward compatibility for OpenTherm® systems and 2-year warranty.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenTherm® modulating boilers\u003c\/strong\u003e and combi boilers requiring precise load control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat pumps and underfloor heating systems\u003c\/strong\u003e benefiting from modulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone valve applications\u003c\/strong\u003e and multi-zone heating installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eDT4M White OpenTherm Wired Thermostat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eDT41SPMWT30\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl Protocol: \u003cstrong\u003eOpenTherm® (modulating)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x AA batteries (OpenTherm® Smart Power option)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003eApprox. 3.5 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay Range: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor Type: \u003cstrong\u003e10k NTC thermistor @ 25 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass V (+3 %)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e101 x 101 x 23 mm (HxWxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e105 g\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTerminal Capacity: \u003cstrong\u003eMax 2.5 mm²\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e2 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eSimple wired wall-mount installation with flip-up wiring platform. User menu configures heating\/cooling modes, eco offset duration, and frost protection. Installer menu provides advanced OpenTherm® parameters, cycle rate adjustment, setpoint limits, and commissioning functions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799348040029,"sku":"DT41SPMWT30","price":43.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/dt41spmwt30-HoneywellHomeDT4MWhiteOpenThermWiredRoomThermostat.jpg?v=1764919148"},{"product_id":"honeywell-home-underfloor-heating-multi-zone-controller-hcc100m2022-smart-ufh-zone-management","title":"Honeywell Home Underfloor Heating Multi-Zone Controller | HCC100M2022 Smart UFH Zone Management","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home HCC100M2022 Underfloor Heating Multi-Zone Controller\u003c\/strong\u003e is an advanced smart controller for managing up to 8 independent underfloor heating\/cooling zones. Featuring Bluetooth connectivity, self-learning fuzzy logic control, and Resideo Pro app configuration, it optimises comfort and energy efficiency across residential and commercial installations.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 8 zones:\u003c\/strong\u003e 6 wired OpenTherm® + 2 wireless, or 8 wireless thermostats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20 configurable 230V\/0.5A thermo-actuator outputs\u003c\/strong\u003e for manifold control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated 230V pump relay\u003c\/strong\u003e with optimised runtime management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth® and RF 868 MHz bi-directional communication\u003c\/strong\u003e for smartphone control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-learning fuzzy logic algorithm\u003c\/strong\u003e for precise zone temperature control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating and cooling modes\u003c\/strong\u003e with external sensor compensation and condensation protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell HCC100M2022?\u003c\/h2\u003e\n\u003cp\u003eAll-in-one solution combining wired\/wireless zoning, intelligent actuator control, and app-based commissioning for maximum system efficiency and installation flexibility.\u003c\/p\u003e\n\u003cp\u003eErP Class VIII rating with cascade connectivity and evohome compatibility for scalable multi-zone applications.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew build and retrofit underfloor heating manifolds\u003c\/strong\u003e up to 20 circuits.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid heating\/cooling systems\u003c\/strong\u003e with heat pumps and mixed zones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResidential and light commercial\u003c\/strong\u003e multi-room temperature management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eHCC100 Multi-Zone UFH Controller\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eHCC100M2022\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5059085002565\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e230 VAC +10\/-15%, 50 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eZone Inputs: \u003cstrong\u003e6 wired OpenTherm® + 2 wireless (max 8 zones)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eActuator Outputs: \u003cstrong\u003e20 x 230V\/0.5A (MT8-230-NC compatible)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePump Relay: \u003cstrong\u003eIntegrated 230V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003e868.3 MHz (25 mW), Bluetooth 2.4 GHz (100 mW)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApp Control: \u003cstrong\u003eResideo Pro (iOS\/Android)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor Inputs: \u003cstrong\u003eExternal hot\/cold\/flow compensation\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass VIII\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMounting: \u003cstrong\u003eDIN-rail or wall\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003eWhite enclosure\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e1 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes: \u003cstrong\u003eController, 2m antenna, EU power cable, fixings\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e18 months\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Smart Features\u003c\/h2\u003e\n\u003cp\u003eScrewless wired terminals and guided app commissioning with automatic detection. Supports cascade connection, OpenTherm® device control, and optimised pump\/actuator sequencing. Status LEDs and antenna positioning ensure reliable RF coverage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799363047773,"sku":"HCC100M2022","price":249.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HCC100M2022-Honeywell-Home-Underfloor-Heating-Multi-Zone-Controller.webp?v=1764919847"},{"product_id":"honeywell-home-hr92uk-wireless-radiator-thermostat-4-pack-evohome-compatible-trv-heads","title":"Honeywell Home HR92UK Wireless Radiator Thermostat 4-Pack | Evohome Compatible TRV Heads","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home HR92UK Wireless Radiator Thermostat 4-Pack\u003c\/strong\u003e contains four \u003cstrong\u003eHR92UK electronic radiator controllers\u003c\/strong\u003e for precise room-by-room temperature control within evohome multi-zoning systems. These slim, backlit TRV heads enable up to 12 independent heating zones with 6 daily time\/temperature settings per zone.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous 2-way 868 MHz RF communication\u003c\/strong\u003e with evohome controller for reliable zoning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable backlit LCD display\u003c\/strong\u003e flips up for viewing or folds flat against radiator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen window detection\u003c\/strong\u003e automatically closes valve when sudden temperature drop occurs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection setting\u003c\/strong\u003e prevents freezing in unused rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocal override dial\u003c\/strong\u003e allows manual temperature adjustment at any time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-year AA battery life\u003c\/strong\u003e with low battery warning on display.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell HR92UK 4-Pack?\u003c\/h2\u003e\n\u003cp\u003eCost-effective starter pack for evohome multi-zoning, providing intelligent radiator control with energy-saving features and seamless system integration.\u003c\/p\u003e\n\u003cp\u003eFits M30 x 1.5 radiator valves with adapters for Danfoss RA, Drayton TRV4, and other common types.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvohome multi-zone heating systems\u003c\/strong\u003e requiring radiator-level temperature control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew evohome installations\u003c\/strong\u003e and system expansions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-efficient room-by-room zoning\u003c\/strong\u003e in homes with radiator heating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eHR92UK Radiator Controller (x4)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePack MPN: \u003cstrong\u003eHR924UK\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndividual MPN: \u003cstrong\u003eHR92UK\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5025121382557\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eValve Compatibility: \u003cstrong\u003eM30 x 1.5 (adapters included)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003e868 MHz bi-directional\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x AA batteries per head (2-year life)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 30 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay: \u003cstrong\u003eBacklit LCD, adjustable position\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCommunication Range: \u003cstrong\u003e30 m (30-100 m open air)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProtection: \u003cstrong\u003eIP30\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions per head: \u003cstrong\u003e60 x 40 x 20 mm (excluding valve)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight per head: \u003cstrong\u003e130 g (with batteries)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes: \u003cstrong\u003e4x HR92UK heads, valve adapters, batteries\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Integration\u003c\/h2\u003e\n\u003cp\u003eTool-free installation onto existing TRV bodies (no system drain-down required). Simple binding to evohome controller with automatic zone naming and scheduling. Open window function configurable via evohome app with valve close time and sensitivity adjustment.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799367733597,"sku":"HR924UK","price":275.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/82193HoneywellHomeWirelessRadiatorThermostat4PackForEvohome.webp?v=1764920173"},{"product_id":"honeywell-home-hr91-wireless-radiator-controller-evohome-compatible-trv-head","title":"Honeywell Home HR91 Wireless Radiator Controller | Evohome Compatible TRV Head","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home HR91 Wireless Radiator Controller\u003c\/strong\u003e is a minimalist wireless TRV head designed for evohome multi-zoning systems, providing precise room-by-room temperature control via two-way 868 MHz RF communication. Its slim ergonomic design features LED status indicators and manual override for reliable operation even during signal loss.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-way 868 MHz RF communication\u003c\/strong\u003e with evohome central controller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED status indicators\u003c\/strong\u003e show device status, evohome pop-ups, and mobile notifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChild lock mode\u003c\/strong\u003e deactivates local interaction via evohome controller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-theft protection\u003c\/strong\u003e for batteries and device mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-window function\u003c\/strong\u003e closes valve during sudden temperature drops from ventilation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple binding button\u003c\/strong\u003e for fast evohome system integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePredefined manual overrides\u003c\/strong\u003e (21°C comfort, 5°C frost) via override button.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Home HR91?\u003c\/h2\u003e\n\u003cp\u003ePerfect for evohome users preferring central app\/controller management with minimal local interaction. Modern design blends seamlessly while delivering intelligent energy-saving features.\u003c\/p\u003e\n\u003cp\u003eIdeal for radiator cabinets and areas where screen-based controls (HR92) are impractical.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvohome multi-zone systems\u003c\/strong\u003e requiring radiator-level precision control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRadiator cabinets and concealed locations\u003c\/strong\u003e needing compact controllers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-traffic areas\u003c\/strong\u003e benefiting from child lock and anti-vandal features.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eHR91 Wireless Radiator Controller\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eHR91\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5025121380720\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eValve Compatibility: \u003cstrong\u003eM30 x 1.5 (adapters for Danfoss RA, others available)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003e868 MHz two-way\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x 1.5V AA alkaline or lithium batteries\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003e2 years typical\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: \u003cstrong\u003e0 °C to +50 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eStorage Temperature: \u003cstrong\u003e-20 °C to +55 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHumidity: \u003cstrong\u003e10-90% RH non-condensing\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProtection Class: \u003cstrong\u003eIP30\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e89.4 x 52 x 52 mm (HxWxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e130 g with batteries\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBody Material: \u003cstrong\u003ePolycarbonate\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e1 year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eTool-free installation with simple lock mechanism onto standard TRV valves. Quick binding to evohome controller with zone naming via app. Override button provides immediate comfort\/frost settings independent of central control.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799375827293,"sku":"HR91","price":59.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeHR91WirelessRadiatorController.webp?v=1764920821"},{"product_id":"honeywell-home-evohome-essentials-pack-atp926g3001-multi-zone-smart-heating-starter-kit","title":"Honeywell Home Evohome Essentials Pack | ATP926G3001 Multi-Zone Smart Heating Starter Kit","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home Evohome Essentials Pack ATP926G3001\u003c\/strong\u003e is a complete smart multi-zoning heating starter kit controlling up to 6 radiators plus central thermostat from smartphone, tablet, or evohome touchscreen. Wi-Fi enabled system creates independent temperature zones for optimal comfort and energy efficiency without rewiring existing pipework.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 smart radiator controllers (HR91)\u003c\/strong\u003e with open window detection and local override.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWi-Fi evohome central controller\u003c\/strong\u003e with full-colour touchscreen and app control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless relay box (BDR91)\u003c\/strong\u003e for simple boiler integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 12 zones total\u003c\/strong\u003e with 6 time\/temperature periods per day per zone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoice control compatible\u003c\/strong\u003e with Amazon Alexa, Google Assistant, Apple HomeKit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeofencing and scheduling\u003c\/strong\u003e via Total Connect Comfort app.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Evohome Essentials Pack?\u003c\/h2\u003e\n\u003cp\u003eComplete wireless zoning solution transforms standard radiator heating into smart multi-zone control, saving up to 30% on energy bills through precise room-by-room temperature management.\u003c\/p\u003e\n\u003cp\u003eNo pipework alterations required - ideal for existing homes seeking smart heating upgrade.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHomes with radiator heating\u003c\/strong\u003e wanting room-by-room control without rewiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart home integration\u003c\/strong\u003e with Alexa, Google, Apple ecosystems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew builds or renovations\u003c\/strong\u003e requiring future-proof zoning capability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eEvohome Essentials Pack\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eATP926G3001\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5025121380188\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eZones Supported: \u003cstrong\u003eUp to 12 heating + 1 hot water\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eController: \u003cstrong\u003eATC928G300 Wi-Fi touchscreen\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRadiator Heads: \u003cstrong\u003e6 x HR91 wireless TRVs\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRelay: \u003cstrong\u003eBDR91 wireless 230V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003e868 MHz bi-directional\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWi-Fi: \u003cstrong\u003e2.4 GHz 802.11 b\/g\/n\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApp: \u003cstrong\u003eTotal Connect Comfort (iOS\/Android)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower: \u003cstrong\u003eController - mains adapter; Heads - 2x AA batteries\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003e2 years per head\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eValve Compatibility: \u003cstrong\u003eM30 x 1.5 + adapters\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass V\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTotal Weight: \u003cstrong\u003e1.68 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes: \u003cstrong\u003eController, 6x HR91 heads, BDR91 relay, batteries, adapters, power supply\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Smart Control\u003c\/h2\u003e\n\u003cp\u003eTool-free TRV head installation (no drain-down), 5-minute controller setup with app binding. Guided commissioning creates zones with geofencing, scheduling, and weather compensation. Expandable to full evohome system with additional heads and hot water kit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799390703965,"sku":"ATP926G3001","price":459.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeEvohomeEssentialsPackATP926G3001.webp?v=1764920821"},{"product_id":"honeywell-home-stored-hot-water-kit-for-evohome-atf500dhw-cylinder-control-accessory","title":"Honeywell Home evohome Stored Hot Water Kit ATF500DHW — CS92A BDR91 Cylinder Thermostat Wireless Zone Valve Control Vented Unvented","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eHoneywell Home evohome Stored Hot Water Kit (ATF500DHW)\u003c\/strong\u003e is the dedicated accessory that adds \u003cstrong\u003efull stored hot water control to any evohome system\u003c\/strong\u003e — enabling the evohome controller to manage, schedule, monitor, and remotely override the hot water cylinder alongside the heating zones it already controls. Compatible with both \u003cstrong\u003evented and unvented indirect cylinders\u003c\/strong\u003e. The kit contains a \u003cstrong\u003eCS92A wireless battery-operated cylinder thermostat\u003c\/strong\u003e (with transceiver), a \u003cstrong\u003eBDR91 wireless relay box\u003c\/strong\u003e to switch a 2-port zone valve or 3-port diverter valve, a \u003cstrong\u003eT8674B strap-on sensor\u003c\/strong\u003e for vented cylinders, and a \u003cstrong\u003eF420079510 insertion sensor\u003c\/strong\u003e for unvented cylinders. Once bound, the \u003cstrong\u003eevohome controller displays the live hot water temperature\u003c\/strong\u003e on its main screen, allows schedule viewing and instant override, and hot water can be controlled remotely via the \u003cstrong\u003eTotal Connect Comfort app\u003c\/strong\u003e (iOS and Android). Battery life on the CS92A is typically \u003cstrong\u003eat least 2 years\u003c\/strong\u003e on 2× AA alkaline cells. This kit is an \u003cstrong\u003eadd-on accessory\u003c\/strong\u003e — an existing evohome controller is required.\n  \u003c\/p\u003e\n\n  \u003c!-- ── AMBER COMPATIBILITY CALLOUT ──────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #e67e22;background:#fef9f0;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b7580a;\"\u003e⚠ Requires an Existing evohome Controller\u003c\/strong\u003e — This kit does \u003cstrong\u003enot include an evohome controller or touchscreen\u003c\/strong\u003e. It is an accessory that adds hot water control to an \u003cstrong\u003eexisting evohome installation\u003c\/strong\u003e. The evohome ATP921R2143 Thermostat Pack (or equivalent) must already be installed and operating. This kit cannot function as a standalone hot water controller.\n  \u003c\/div\u003e\n\n  \u003c!-- ── TEAL CYLINDER CALLOUT ────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #008377CF;background:#e6f4f3;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eℹ Not for Combi Boilers — Stored Cylinder Systems Only\u003c\/strong\u003e\u003cbr\u003e\n    This kit controls \u003cstrong\u003estored hot water cylinders\u003c\/strong\u003e — it is designed for properties with a \u003cstrong\u003esystem boiler or heat-only (regular) boiler\u003c\/strong\u003e that heats an indirect hot water cylinder via a zone valve or diverter valve. It is \u003cstrong\u003enot suitable for combi boilers\u003c\/strong\u003e, which produce hot water on demand without a storage cylinder. If you are unsure whether your system has a stored cylinder, check the airing cupboard — if there is an insulated hot water tank connected to the boiler via pipework, this kit applies. Combi boiler users do not need hot water control accessories.\n  \u003c\/div\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;\"\u003eVented \u0026amp; Unvented\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eBoth cylinder types\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;\"\u003eCS92A + BDR91\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eFull wireless kit\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;\"\u003eApp Control\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eTotal Connect Comfort\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;\"\u003e2+ Years\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eBattery life (CS92A)\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES ──────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ CS92A Wireless Cylinder Thermostat — No Extra Wiring\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003eCS92A\u003c\/strong\u003e is a wireless, battery-operated cylinder thermostat that communicates with the evohome controller by radio — \u003cstrong\u003eno additional wiring between the cylinder and the evohome system is needed\u003c\/strong\u003e. It mounts directly to the cylinder or pipework using the supplied sensor, and once bound to the evohome controller, it transmits live cylinder temperature readings to the controller screen. The CS92A is powered by \u003cstrong\u003e2× AA alkaline batteries\u003c\/strong\u003e with a typical life of at least 2 years, making it entirely independent of any cable run to the airing cupboard. This is a significant advantage over wired cylinder thermostats in properties where running a new cable from the cylinder to the programmer or wiring centre would be disruptive.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ BDR91 Wireless Relay Box — Zone Valve Control\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003eBDR91 wireless relay box\u003c\/strong\u003e receives switching commands from the evohome controller by radio and operates the \u003cstrong\u003ehot water zone valve or diverter valve\u003c\/strong\u003e — the same way it switches heating zone valves in the rest of the evohome system. The relay box is wired to the zone valve's motor wires (the same connection a conventional programmer would use) and requires only a mains supply. For S-plan systems (separate zone valves for heating and hot water), the BDR91 switches the hot water zone valve independently. For Y-plan systems (a single 3-port diverter), the BDR91 provides the demand signal that calls for hot water via the diverter's mid-position.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Both Vented \u0026amp; Unvented Sensors Included\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe kit includes \u003cstrong\u003etwo temperature sensors\u003c\/strong\u003e for both cylinder types: the \u003cstrong\u003eT8674B strap-on surface sensor\u003c\/strong\u003e is attached to the outside of the cylinder body and is used with \u003cstrong\u003evented (gravity-fed \/ open-vented) indirect cylinders\u003c\/strong\u003e where access to an immersion heater pocket is not available. The \u003cstrong\u003eF420079510 insertion sensor\u003c\/strong\u003e inserts into the thermostat pocket on \u003cstrong\u003eunvented (mains-pressure) cylinders\u003c\/strong\u003e for a more accurate in-cylinder temperature reading. Having both sensors in the box means the kit is compatible with virtually any stored cylinder installation without needing to order additional parts.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Live Cylinder Temperature on the evohome Screen\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eOnce bound, the \u003cstrong\u003eevohome controller's main screen displays the actual live temperature\u003c\/strong\u003e of the stored hot water alongside the heating zone temperatures. This gives the homeowner a single dashboard showing the state of both heating and hot water from one location — no need to check a separate cylinder thermostat dial or programmer. The screen also shows the \u003cstrong\u003ehot water schedule\u003c\/strong\u003e (the times when hot water heating is active) and allows the schedule to be \u003cstrong\u003eoverridden instantly\u003c\/strong\u003e with a single tap — boosting the hot water for an unexpected bath or guest without reprogramming the schedule.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Remote Control via Total Connect Comfort App\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eVia the \u003cstrong\u003eHoneywell Home Total Connect Comfort app\u003c\/strong\u003e (iOS and Android, free), the hot water can be \u003cstrong\u003emonitored and controlled remotely\u003c\/strong\u003e from anywhere with an internet connection — the same app used to control the evohome heating zones. Check whether the hot water is on, boost it before returning home, cancel the afternoon cycle if plans change, or view the hot water temperature from the office. The evohome system also integrates with \u003cstrong\u003eAmazon Alexa, Google Home, and Apple HomeKit\u003c\/strong\u003e for voice control via the wider evohome ecosystem.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Time and Temperature Scheduling — LED Status Indicators\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe hot water schedule is programmed on the evohome controller using the same interface as the heating zones — set the \u003cstrong\u003etimes and target temperatures\u003c\/strong\u003e for hot water heating across the day, with the system heating the cylinder to the set point temperature at the scheduled times and holding it there. The BDR91 relay box features \u003cstrong\u003eclear LED status indicators\u003c\/strong\u003e showing whether the relay is energised (hot water called) or at rest, making commissioning checks and fault finding straightforward without needing to refer to the controller screen or app.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── WHAT'S IN THE BOX ───────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eWhat's in the Box — ATF500DHW\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:40%;border-bottom:1px solid #c8e6e3;\"\u003eCS92A\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eWireless battery-operated cylinder thermostat with transceiver — 2× AA alkaline (typical 2+ year life)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBDR91\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eWireless relay box — controls 2-port zone valve or 3-port diverter valve (mains wired)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eT8674B\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eStrap-on surface sensor — for vented indirect cylinders\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eF420079510\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eInsertion sensor — for unvented cylinders (inserts into thermostat pocket)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eDocumentation\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003eInstallation guide (including wiring diagrams for S-plan and Y-plan)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — ATF500DHW\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ MPN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHoneywell Home (by Resideo) — \u003cstrong\u003eATF500DHW\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGTIN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5025121382274\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCompatible System\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHoneywell Home evohome (requires existing evohome controller)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCylinder Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eVented (gravity-fed) indirect · Unvented (mains-pressure) indirect\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eValve Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2-port zone valve (S-plan) · 3-port diverter valve (Y-plan)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCommunication\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eWireless RF (evohome ecosystem protocol)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCS92A Power\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2× AA alkaline batteries — typical life 2+ years\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBDR91 Power\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e230V AC mains (wired to zone valve circuit)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eApp Control\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eTotal Connect Comfort (iOS \u0026amp; Android) · Alexa · Google Home · Apple HomeKit\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBDR91 LED Indicators\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eYes — relay status, time and temperature set display\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eWeight (inc. packaging)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.662 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e1 year — Honeywell Home manufacturer's warranty\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;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eDo I need this kit if I have a combi boiler?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003e\n\u003cstrong\u003eNo\u003c\/strong\u003e — combi boilers heat water on demand and have no stored cylinder to control. This kit is for properties with a \u003cstrong\u003esystem boiler or regular (heat-only) boiler\u003c\/strong\u003e that feeds an indirect hot water cylinder. If you have a combi boiler, the evohome system controls your central heating zones but there is nothing to add for hot water — it operates automatically whenever a hot tap is opened. Only purchase this kit if your property has a hot water cylinder in an airing cupboard or plant room.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eCan I control the immersion heater with this kit?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe ATF500DHW controls the \u003cstrong\u003ezone valve or diverter valve\u003c\/strong\u003e that routes boiler-heated water to the cylinder — it does not directly switch an immersion heater. The CS92A cylinder thermostat monitors temperature and signals the BDR91 relay, which in turn controls the valve. For direct immersion heater control, a separate dedicated immersion heater controller or timer would be needed. However, many properties use the immersion heater purely as a backup — if the cylinder is already zone-valve-controlled via the ATF500DHW, the immersion can be left on its standard thermostat as a safety fallback without requiring additional evohome integration.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat is the difference between S-plan and Y-plan, and does this kit work with both?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the ATF500DHW works with both. \u003cstrong\u003eS-plan\u003c\/strong\u003e systems use separate 2-port motorised zone valves for the heating circuit and the hot water circuit — the BDR91 in this kit switches the hot water zone valve. \u003cstrong\u003eY-plan\u003c\/strong\u003e systems use a single 3-port mid-position diverter valve that routes flow to heating only, hot water only, or both simultaneously — the BDR91 provides the hot water demand signal to the diverter valve's mid-position terminal. The installation guide included in the box contains specific wiring diagrams for both S-plan and Y-plan configurations. If you are unsure which plan your system uses, an installer can identify it from the valve fitted to the pipework near the boiler.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eDo I need to keep my existing programmer or wiring centre?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eWhen the ATF500DHW is fully installed and controlling hot water via the BDR91, the \u003cstrong\u003ehot water channels on an existing programmer are bypassed\u003c\/strong\u003e — the BDR91 takes over the switching function for the hot water zone valve. You can remove or bypass the programmer's hot water output, or leave the programmer in place with its hot water output permanently enabled (which passes control back to the BDR91 and CS92A). The evohome system and BDR91 become the new hot water controller. Your existing wiring centre (if fitted) typically remains in place as it provides the switching connections for the zone valves, pump, and boiler — the BDR91 replaces the demand signal input, not the wiring centre itself.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhere should I mount the CS92A and BDR91 — are there placement restrictions?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThe \u003cstrong\u003eCS92A cylinder thermostat\u003c\/strong\u003e should be mounted on the cylinder body or pipework adjacent to the cylinder, where it can receive the temperature signal from the selected sensor. Keep it away from direct heat sources and ensure it has clear RF line-of-sight (or minimal interference) to the evohome controller or a BDR91 used as a relay. The \u003cstrong\u003eBDR91\u003c\/strong\u003e should be mounted near the zone valve it controls, close to the wiring connections. Critically: do \u003cstrong\u003enot mount the CS92A close to any BDR91\u003c\/strong\u003e — the relay box generates RF interference that can disrupt the thermostat's transmission. Maintain at least 30cm separation between the CS92A and any BDR91 unit. Similarly, keep both units away from other RF sources, metal enclosures, and large electrical loads where possible.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799405744477,"sku":"ATF500DHW-R","price":133.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeStoredHotWaterKitForEvohomeATF500DHW.webp?v=1764921029"},{"product_id":"honeywell-home-r6-2-channel-wireless-receiver-box-r6h911rf4018-t6r-thermostat-companion","title":"Honeywell Home R6 2-Channel Wireless Receiver Box | R6H911RF4018 T6R Thermostat Companion","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home R6 2-Channel Wireless Receiver Box R6H911RF4018\u003c\/strong\u003e is designed for dual-zone control with T6R wireless smart thermostats, managing two independent heating areas like upstairs\/downstairs or living\/working spaces. Featuring installer-friendly wiring options, override buttons, and OpenTherm® compatibility for precise boiler modulation.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 independent relay channels\u003c\/strong\u003e for zone valves or 24-230V on\/off appliances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated OpenTherm® output\u003c\/strong\u003e for modulating boiler control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush override buttons per zone\u003c\/strong\u003e with clear LED status indication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlip-up wiring platform\u003c\/strong\u003e allows back or bottom cable entry for fast installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal labels and earth park\u003c\/strong\u003e simplify complex zone valve wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e868 MHz RF communication\u003c\/strong\u003e with T6R thermostats (30m residential range).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell R6 Receiver?\u003c\/h2\u003e\n\u003cp\u003ePerfect companion for T6R dual-zone systems, providing robust relay switching for S\/Y-plan zone valves alongside modulating boiler control for maximum efficiency.\u003c\/p\u003e\n\u003cp\u003eApp-controlled via Honeywell Home app for remote zone management and scheduling.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-zone heating systems\u003c\/strong\u003e (upstairs\/downstairs, living\/working areas).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS-plan and Y-plan zone valve applications\u003c\/strong\u003e with T6R thermostats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenTherm® boilers\u003c\/strong\u003e requiring precise modulation control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eR6 2-Channel Wireless Receiver\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eR6H911RF4018\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5025121381130\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e230 VAC, 50\/60 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRelay Rating: \u003cstrong\u003e5A resistive \/ 3A inductive (230V); 5A resistive \/ 3A inductive (24V)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOpenTherm®: \u003cstrong\u003eModulating boiler control output\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003e868.0-868.6 MHz (25mW)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRange: \u003cstrong\u003e30 m residential\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTerminals: \u003cstrong\u003eUp to 1.5 mm² wires\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMounting: \u003cstrong\u003eWall or wall box\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e110 x 110 x 40 mm (WxHxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e0.26 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIP Rating: \u003cstrong\u003eIP30\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cp\u003eSimple binding with T6R thermostats via override buttons. Supports 230V\/24V zone valves, combi boilers, system boilers, and heat pumps. Flip-up platform enables wiring from back (wall box) or bottom with cable clamps for professional installations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799415247197,"sku":"R6H911RF4018","price":125.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/r6h911rf4018HoneywellHomeR62-ChannelWirelessReceiverBoxForT6RThermostats.jpg?v=1764921363"},{"product_id":"honeywell-home-sundial-plan-wiring-centre-42005748-001-universal-heating-control-junction-box","title":"Honeywell Home Sundial Plan Wiring Centre | 42005748-001 Universal Heating Control Junction Box","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home Wiring Centre 42005748-001\u003c\/strong\u003e is a universal junction box designed to simplify wiring for Sundial Plan central heating systems including C, S, and Y configurations. Featuring dedicated labelled terminals for all components, pre-wired links, and on-board fusing, it eliminates complex wiring diagrams for professional installations.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e37 clearly labelled terminals\u003c\/strong\u003e - one wire per connection for error-free wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-configured jumper links\u003c\/strong\u003e match numbered diagrams in Honeywell Wiring Guide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2A on-board fuse with spare\u003c\/strong\u003e provides circuit protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire-retardant ABS enclosure\u003c\/strong\u003e with cable clamps and strain relief.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReversible lid and base\u003c\/strong\u003e for top\/bottom cable entry flexibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupports basic and pump overrun boilers\u003c\/strong\u003e across all 5A applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Wiring Centre?\u003c\/h2\u003e\n\u003cp\u003eIndustry standard for UK heating installers, dramatically reducing commissioning time while ensuring compliance with Sundial Plan wiring conventions.\u003c\/p\u003e\n\u003cp\u003eNo additional instructions required - simply follow numbered terminal references from Honeywell guides.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSundial Plan C, S, Y systems\u003c\/strong\u003e with motorised valves and thermostats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDomestic boiler installations\u003c\/strong\u003e requiring professional wiring hub.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew builds and system upgrades\u003c\/strong\u003e following Honeywell wiring standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eSundial Plan Wiring Centre\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003e42005748-001\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5025121384735\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTerminals: \u003cstrong\u003e37 positions, max 1.5 mm² wire\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaximum Current: \u003cstrong\u003e5A @ 230V 50Hz (PCB)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFuse Rating: \u003cstrong\u003e2A 230V 50Hz (with spare)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable Clamps: \u003cstrong\u003e2 x 4-way (1.5 mm² twin \u0026amp; earth)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAmbient Rating: \u003cstrong\u003eT50\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFixing: \u003cstrong\u003e3 x No.8 screw holes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eEnclosure: \u003cstrong\u003eFire-retardant PC\/ABS\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompliance: \u003cstrong\u003eEC Directive 2006\/95\/EC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e0.3 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility\u003c\/h2\u003e\n\u003cp\u003eMounts directly to wall or surface with reversible orientation. Cut pre-wired links per lid instructions to configure for specific boiler\/zoning layout. Compatible with all Honeywell Sundial Plan thermostats, motorised valves, and pump controls.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799428845917,"sku":"42005748-001","price":19.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/42005748-001HoneywellHomeWiringCentre.jpg?v=1764921549"},{"product_id":"honeywell-home-10-way-junction-box-42002116-002-sundial-plan-wiring-accessory","title":"Honeywell Home 10-Way Junction Box | 42002116-002 Sundial Plan Wiring Accessory","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home 10-Way Junction Box 42002116-002\u003c\/strong\u003e is a universal wiring enclosure designed to simplify Sundial Plan central heating installations using numbered diagrams from the Honeywell Wiring Guide. Supporting all 15A rated applications, it provides compliant strain relief and optimised terminals for professional heating control wiring.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 optimised terminals\u003c\/strong\u003e sized for secure heating control connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 cable knockouts\u003c\/strong\u003e around all sides with integrated strain relief.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong fire-retardant ABS enclosure\u003c\/strong\u003e ensures electrical safety compliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 fixing holes\u003c\/strong\u003e for No.8 screws in base for secure wall mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal 15A capacity\u003c\/strong\u003e handles all Sundial Plan configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompliant with current Wiring Regulations\u003c\/strong\u003e and EC Directive 2006\/95\/EC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell 10-Way Junction Box?\u003c\/h2\u003e\n\u003cp\u003eEssential accessory for clean, compliant wiring of thermostats, motorised valves, and boiler controls in domestic heating installations.\u003c\/p\u003e\n\u003cp\u003eEliminates junction box clutter while providing professional-grade cable management and safety features.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSundial Plan C, S, Y heating systems\u003c\/strong\u003e requiring centralised wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDomestic boiler controls\u003c\/strong\u003e and motorised valve installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional heating engineers\u003c\/strong\u003e following Honeywell wiring standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003e10-Way Junction Box\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003e42002116-002\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5025121384834\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTerminals: \u003cstrong\u003e10 positions\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaximum Current: \u003cstrong\u003e15A @ 230V 50Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable Capacity: \u003cstrong\u003eUp to 8 mm²\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable Entries: \u003cstrong\u003e12 knockouts all sides\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFixing: \u003cstrong\u003e6 x No.8 screw holes in base\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e147 x 105 x 40 mm (WxHxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaterial: \u003cstrong\u003eFire-retardant ABS plastic\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e0.3 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompliance: \u003cstrong\u003eEC Directive 2006\/95\/EC, current Wiring Regulations\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Application\u003c\/h2\u003e\n\u003cp\u003eDesigned specifically for Honeywell Sundial Plan numbered wiring diagrams. Strain relief on all entries prevents cable damage while optimised terminal sizing ensures reliable connections. Surface mount with multiple fixing points for flexible positioning near boiler or controls.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799437955421,"sku":"42002116-002","price":9.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/42002116-002-HoneywellHome10WayJunctionBox.jpg?v=1764921698"},{"product_id":"honeywell-home-du144-22mm-automatic-bypass-valve-straight-pattern-du144a1001","title":"Honeywell Home DU144 22mm Automatic Bypass Valve | Straight Pattern DU144A1001","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home DU144A1001 22mm Automatic Bypass Valve\u003c\/strong\u003e maintains minimum flow through boilers when TRVs close, preventing low flow alarms and flue gas condensation corrosion. Factory-set to 0.2 bar with adjustable range 0.1-0.6 bar, it ensures proper operation of boiler temperature sensors and external compensating controls.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e22mm compression fittings\u003c\/strong\u003e for straight pipe installation between flow and return.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable differential pressure\u003c\/strong\u003e 0.1-0.6 bar (factory 0.2 bar) via knurled handwheel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection cap\u003c\/strong\u003e prevents unauthorised adjustment of settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh flow capacity\u003c\/strong\u003e kvs 2.3 (cv 2.7) up to 1.5 m³\/hour.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass construction\u003c\/strong\u003e with stainless steel spindle and EPDM seals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpanner flats\u003c\/strong\u003e assist compression fitting tightening.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell DU144?\u003c\/h2\u003e\n\u003cp\u003eEssential safety device for modern condensing boilers requiring minimum flow protection, reducing system noise and ensuring reliable operation when most radiators are closed.\u003c\/p\u003e\n\u003cp\u003eSuperior to fixed bypass valves with precise pressure control and rugged industrial design.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondensing boilers\u003c\/strong\u003e specifying minimum flow requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystems with TRVs\u003c\/strong\u003e where return temperature protection is needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas water heaters\u003c\/strong\u003e requiring guaranteed minimum circulation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eDU144 Straight Automatic Bypass Valve\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eDU144A1001\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnections: \u003cstrong\u003e22mm compression (straight pattern)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMedium: \u003cstrong\u003eWater\/glycol mix (VDI 2035 compliant)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003epH Range: \u003cstrong\u003e8-9.5\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: \u003cstrong\u003e2-130 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaximum Pressure: \u003cstrong\u003e10 bar\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDifferential Pressure: \u003cstrong\u003e0.1-0.6 bar (factory 0.2 bar)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlow Capacity: \u003cstrong\u003ekvs 2.3 (cv 2.7)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaterials: \u003cstrong\u003eBrass body, stainless spindle, EPDM seals\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e79 x 80 x 60 mm (WxHxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e0.3 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e1 year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eInstall between boiler flow and return with arrow indicating flow direction. 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Featuring TPI energy-saving control, optimisation algorithms, and large LCD display with up to 6 daily temperature changes across 7-day, 5\/2, or single-day programmes.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless RF communication\u003c\/strong\u003e 30m range between thermostat and receiver box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTPI (Temporary Proportional Integral) control\u003c\/strong\u003e reduces boiler cycling for efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimum start\/stop and delayed start\u003c\/strong\u003e learns room heating characteristics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-bound thermostat\/receiver\u003c\/strong\u003e - no binding setup required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAway mode with holiday function\u003c\/strong\u003e (1-99 days) and adjustable frost protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge LCD display\u003c\/strong\u003e with optional backlight and burner ON symbol.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell T4R?\u003c\/h2\u003e\n\u003cp\u003eModern replacement for traditional wired thermostats with advanced energy-saving algorithms and simple programming via intuitive on-screen menus.\u003c\/p\u003e\n\u003cp\u003eErP Class IV rating ensures compliance while delivering precise control for combi boilers and zoned systems.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-230V on\/off appliances\u003c\/strong\u003e (gas boilers, combi-boilers, zone valves).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS\/Y Plan systems\u003c\/strong\u003e and S Plan Plus additional zones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombination boiler installations\u003c\/strong\u003e requiring volt-free switching.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eT4R Wireless Programmable Thermostat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eY4H910RF4003 \/ T4H910RF4003\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003e868 MHz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThermostat Power: \u003cstrong\u003e2 x AA alkaline batteries (included)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReceiver Power: \u003cstrong\u003e230 V AC 50 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eContact Rating: \u003cstrong\u003eVolt-free 5(3)A @ 230V AC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay Range: \u003cstrong\u003e0 °C to 50 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProgramming: \u003cstrong\u003e7-day, 5\/2-day, or 1-day (4-6 periods\/day)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThermostat Dimensions: \u003cstrong\u003e97 x 136 x 62 mm (HxWxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReceiver Dimensions: \u003cstrong\u003e110 x 110 x 40 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass IV\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e1 year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eThree-step installation: wire receiver, power up and test, configure thermostat. Supports automatic summer\/winter time change, temporary overrides, and full installer menu for cycle rate, limits, and system parameters.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799449817437,"sku":"Y4H910RF4003","price":115.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/y4h910rf4003-t4r-HoneywellHomeT4R7DayWirelessProgrammableRoomThermostat.jpg?v=1764922030"},{"product_id":"honeywell-home-dt4r-black-room-thermostat-spare-dts42brfst22-wireless","title":"Honeywell Home DT4R Black Room Thermostat Spare | DTS42BRFST22 Wireless","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home DT4R Black Room Thermostat DTS42BRFST22\u003c\/strong\u003e is a spare wireless thermostat head for replacing failed DT4R units or expanding existing systems. Modern slim design with large energy-efficient LED display and full backwards\/forwards compatibility across Honeywell RF ecosystem including evohome and HCC100.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpare thermostat only\u003c\/strong\u003e - requires existing compatible receiver (DT4R, evohome, HCC100).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRamses II \u0026amp; III RF protocol\u003c\/strong\u003e ensures seamless integration with all Honeywell RF products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in eco-mode\u003c\/strong\u003e provides timed temperature offset for energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-efficient LED display\u003c\/strong\u003e auto-off technology with wake-up button.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit captive touch buttons\u003c\/strong\u003e for intuitive operation in all lighting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuzzy Logic control\u003c\/strong\u003e optimises boiler operation for precise temperature maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose DT4R Black Spare Thermostat?\u003c\/h2\u003e\n\u003cp\u003eCost-effective replacement for failed thermostat heads maintaining full system functionality without complete kit replacement.\u003c\/p\u003e\n\u003cp\u003ePerfect match for black DT4R installations or system expansion with consistent styling and performance.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDT4R system replacements\u003c\/strong\u003e (thermostat head failure).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvohome and HCC100 expansions\u003c\/strong\u003e requiring additional thermostats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExisting Honeywell RF installations\u003c\/strong\u003e needing spare parts stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eDT4R Black Spare Thermostat Head\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eDTS42BRFST22\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5059085002695\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x AA batteries\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003eApprox. 3.5 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay Range: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor: \u003cstrong\u003e10k NTC thermistor @ 25 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003eISM 868.0-868.6 MHz (Ramses II\/III)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRange: \u003cstrong\u003e30 m residential\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass V (+3 %)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e101 x 101 x 54 mm (WxHxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e130 g\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e2 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility \u0026amp; Installation\u003c\/h2\u003e\n\u003cp\u003eDirect replacement for DT4R black thermostats or spare for evohome\/HCC100 systems. Simple battery installation and automatic binding to existing receivers. Supports heat pumps, zoning, underfloor heating, and 24-230V on\/off appliances.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799452569949,"sku":"DTS42BRFST22","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/honeywell-dt4-black-thermostat.jpg?v=1764922186"},{"product_id":"honeywell-home-dt4r-white-room-thermostat-spare-dts42wrfst20-wireless","title":"Honeywell Home DT4R White Room Thermostat Spare | DTS42WRFST20 Wireless","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home DT4R White Room Thermostat DTS42WRFST20\u003c\/strong\u003e is a spare wireless thermostat head for replacing failed DT4R units or expanding existing Honeywell RF systems. Slim modern design with energy-efficient LED display and full compatibility across evohome, HCC100, and legacy RF products via Ramses II\/III protocol.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpare thermostat only\u003c\/strong\u003e - pairs with existing DT4R, evohome, or HCC100 receivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRamses II \u0026amp; III RF compatibility\u003c\/strong\u003e works with all Honeywell wireless heating controls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in eco-mode\u003c\/strong\u003e timed temperature reduction for energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-off LED display\u003c\/strong\u003e with wake-up button conserves battery life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit touch buttons\u003c\/strong\u003e ensure easy operation day or night.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuzzy Logic control\u003c\/strong\u003e provides precise temperature regulation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose DT4R White Spare Thermostat?\u003c\/h2\u003e\n\u003cp\u003eEconomical replacement maintains full system performance without buying complete thermostat kits.\u003c\/p\u003e\n\u003cp\u003eClassic white finish matches traditional interiors while delivering modern energy-saving features.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDT4R replacements\u003c\/strong\u003e (thermostat head failure scenarios).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEvohome\/HCC100 expansions\u003c\/strong\u003e adding wireless thermostats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService stock\u003c\/strong\u003e for Honeywell RF heating installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eDT4R White Spare Thermostat Head\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eDTS42WRFST20\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5059085002671\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x AA batteries\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003eApprox. 3.5 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay Range: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor: \u003cstrong\u003e10k NTC thermistor @ 25 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003eISM 868.0-868.6 MHz (Ramses II\/III)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRange: \u003cstrong\u003e30 m residential\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass V (+3 %)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e101 x 101 x 54 mm (WxHxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e0.25 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e2 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility \u0026amp; Installation\u003c\/h2\u003e\n\u003cp\u003eInstant replacement for DT4R white thermostats or spare for evohome underfloor controllers. Simple battery fit and automatic receiver binding. Supports heat pumps, zoning, underfloor heating, zone valves, and 24-230V on\/off appliances.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799454437725,"sku":"DTS42WRFST20","price":53.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeDT4WhiteWiredRoomThermostat.jpg?v=1764922298"},{"product_id":"honeywell-home-evohome-wi-fi-connected-thermostat-pack-atp921r3100-multi-zone-smart-controller","title":"Honeywell Home Evohome Wi-Fi Connected Thermostat Pack | ATP921R3100 Multi-Zone Smart Controller","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home ATP921R3100 Evohome Wi-Fi Thermostat Pack\u003c\/strong\u003e is the core controller for multi-zone smart heating systems, managing up to 12 independent heating zones plus domestic hot water via intuitive touchscreen and smartphone app. Includes Wi-Fi enabled evohome controller, wireless BDR91 relay box, and table stand for complete starter system.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWi-Fi connectivity\u003c\/strong\u003e for Total Connect Comfort app control (iOS\/Android).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-colour touchscreen\u003c\/strong\u003e with analogue\/digital clock and day\/night modes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 12 heating zones\u003c\/strong\u003e with 6 daily time\/temperature settings each.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless BDR91 relay box\u003c\/strong\u003e for simple boiler integration (230V on\/off).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTable\/wall mount flexibility\u003c\/strong\u003e with 2-hour battery operation off stand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoice control ready\u003c\/strong\u003e - Amazon Alexa, Google Assistant compatible.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Evohome ATP921R3100 Pack?\u003c\/h2\u003e\n\u003cp\u003eFoundation for scalable multi-zone heating control without pipework changes, delivering up to 30% energy savings through precise room-by-room temperature management.\u003c\/p\u003e\n\u003cp\u003eExpands with HR91\/HR92 radiator controllers, hot water kit, and underfloor zoning accessories.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydronic radiator and underfloor heating systems\u003c\/strong\u003e requiring zoning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombi and conventional boilers\u003c\/strong\u003e (on\/off control).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart home integration\u003c\/strong\u003e with Alexa, Google ecosystems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eEvohome Wi-Fi Controller Pack\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eATP921R3100\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eKit Contents: \u003cstrong\u003eATC928G300 controller, BDR91 relay, ATF800 stand, power supply\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWi-Fi: \u003cstrong\u003e2.4 GHz 802.11 b\/g\/n\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003e868 MHz bi-directional\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eController Power: \u003cstrong\u003eMains adapter (2hr battery backup)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRelay Rating: \u003cstrong\u003e230V 5(3)A volt-free\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5-35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eZones: \u003cstrong\u003e12 heating + 1 hot water\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eController Dimensions: \u003cstrong\u003e101 x 139 x 21 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRelay Dimensions: \u003cstrong\u003e90 x 92 x 31.6 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass IV (Class V with OpenTherm®)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e1 year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Smart Control\u003c\/h2\u003e\n\u003cp\u003e5-minute setup: wire BDR91 relay to boiler, power controller, bind via touchscreen, connect Wi-Fi. Guided app commissioning names zones, sets schedules, enables geofencing and weather compensation. Expandable to full evohome ecosystem with radiator controllers and hot water kit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799483076957,"sku":"ATP921R3100","price":230.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/honeywell-evohome-wifi-thermostat-pack.webp?v=1764923078"},{"product_id":"honeywell-replacement-actuator-head-v4043h-series-zone-valves","title":"Honeywell Replacement Actuator Head V4043H Series Zone Valves","description":"\u003c!-- SEO Product Name: Honeywell Home V4043H Replacement Actuator Powerhead 40003916-001 — Zone Valve Motor Head 22mm 28mm No Drain-Down --\u003e\n\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eHoneywell Home V4043H Replacement Actuator Powerhead (40003916-001)\u003c\/strong\u003e is the \u003cstrong\u003egenuine Honeywell replacement motor head assembly for V4043H and V4043C series two-port motorised zone valves\u003c\/strong\u003e — compatible with all 22mm, 28mm, and 1\" BSP V4043H valve bodies. When a zone valve fails to open, fails to close, or operates noisily, the fault is almost always in the motorised powerhead rather than the valve body itself. Because the powerhead is designed to be replaced without draining the system, this part allows a faulty zone valve to be returned to full operation in minutes — no isolating the boiler, no drain-down, no cutting out pipework, no compression fittings to remake. The replacement head includes the end switch, spring return mechanism, and a \u003cstrong\u003e1 metre heat-resistant pre-wired cable\u003c\/strong\u003e, and attaches to the existing valve body with two screws and two locating pegs.\n  \u003c\/p\u003e\n\n  \u003c!-- ── RED SAFETY CALLOUT ─────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Always isolate the mains supply before removing or refitting the actuator assembly.\u003c\/strong\u003e The powerhead must be replaced by a qualified person. The valve body (and therefore the heating system water) remains live and pressurised during the head swap — only the electrical supply to the actuator needs to be isolated. Do not attempt to replace the head while the electrical supply is connected.\n  \u003c\/div\u003e\n\n  \u003c!-- ── AMBER OLD VALVE CALLOUT ─────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ Pre-1987 valves — check before ordering\u003c\/strong\u003e\u003cbr\u003e\n    V4043 valves manufactured \u003cstrong\u003ebefore 1987\u003c\/strong\u003e did not feature the replaceable powerhead design — the motor and valve body were a single integrated unit. On these older valves, the 40003916-001 powerhead cannot be fitted directly. The \u003cstrong\u003ePlate \u0026amp; Ball Assembly Kit (40003918-006)\u003c\/strong\u003e is required first to upgrade the old valve body to accept a replaceable head, and must be purchased separately. If the existing valve has a removable head (secured by 2 screws), the 40003916-001 fits directly. If it does not, use the plate kit or replace the complete valve.\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No Drain-Down — System Stays Full\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003eentire heating system remains full and pressurised\u003c\/strong\u003e during the powerhead swap. The valve body stays screwed into the pipework; only the motorised head is removed. This means there is no need to drain radiators, refill the system, re-dose inhibitor, or re-pressurise a sealed system — the repair is complete in under 10 minutes from isolation to restoration of heating. This is the most significant practical advantage of the V4043H's design, and why replacing the head rather than the whole valve is the correct and most cost-effective repair.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Genuine Honeywell Home Part\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe 40003916-001 is the \u003cstrong\u003eofficial Honeywell Home replacement powerhead\u003c\/strong\u003e — not a generic compatible copy. Using the genuine part ensures identical electrical and mechanical characteristics to the original motor, the correct end switch operation (which fires the boiler and runs the pump), and the correct spring return force. Generic replacements can have different switching thresholds, different torque characteristics, or different cable colour coding — all of which can cause wiring or timing issues after installation.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Fits All V4043H Series — 22mm, 28mm \u0026amp; 1\" BSP\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe 40003916-001 powerhead is compatible with \u003cstrong\u003eall current V4043H and V4043C valve bodies\u003c\/strong\u003e — including the V4043H1056 (22mm), V4043H1106 (28mm), V4043H1080 (1\" BSP), and earlier V4043C variants. The two-screw, two-peg mounting arrangement is consistent across the range. Note that on the 28mm and 1\" BSP valve bodies, the \u003cstrong\u003ewhite wire\u003c\/strong\u003e in the cable must be electrically isolated if wiring for S-plan only — refer to the Honeywell wiring instructions for confirmation.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Includes End Switch — Boiler and Pump Control\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe replacement head includes the \u003cstrong\u003eauxiliary end switch\u003c\/strong\u003e — the potential-free switch that closes when the valve reaches fully open and sends the signal to fire the boiler and\/or start the circulating pump. This is the switch that provides boiler interlock in S-plan and Y-plan systems. If the original fault was the end switch failing to fire the boiler (rather than the motor failing to open the valve), replacing the complete powerhead restores both the motor operation and the switching function simultaneously.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Spring Return — Fail-Safe Closed\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe \u003cstrong\u003espring return mechanism\u003c\/strong\u003e is integral to the powerhead. On power removal, the spring closes the valve within 5–6 seconds without any electrical input — the normally closed fail-safe behaviour that prevents uncontrolled heating circulation during power cuts. The replacement head's spring is factory-set to the correct return force for the V4043 ball mechanism; using a valve body with a worn or corroded ball while fitting a new head is less cost-effective than fitting a complete replacement valve.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Pre-Wired 1m Heat-Resistant Cable\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eSupplied with a \u003cstrong\u003e1 metre pre-wired heat-resistant flying lead\u003c\/strong\u003e. In most installations the existing wiring to the junction box or wiring centre can be transferred directly from the old head to the new — the wires should be identical in colour coding and function. If the existing cable run is longer than 1 metre (the head has been replaced before with an extended cable, or the wiring centre is further away than usual), note this before ordering.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── FAULT DIAGNOSIS ────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eWhen Is the Powerhead the Right Repair?\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;padding:16px;border-radius:0 0 6px 6px;margin-bottom:22px;font-size:14px;line-height:1.8;\"\u003e\n    Replace the powerhead (rather than the whole valve) when:\n    \u003cul style=\"margin:8px 0 0;padding-left:20px;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eValve fails to open\u003c\/strong\u003e — the motor is not turning, or is humming but not moving (seized motor).\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eValve opens but boiler does not fire\u003c\/strong\u003e — the end switch has failed.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eValve fails to close fully\u003c\/strong\u003e — the spring has weakened or the motor is not releasing (motor sticking at open position).\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eValve is noisy\u003c\/strong\u003e — motor grinding or clicking during operation.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eValve body is in good condition\u003c\/strong\u003e — the ball valve seals are not leaking and there is no corrosion on the body. If the body itself is faulty (leaking, corroded, seized ball), a complete replacement valve is more appropriate.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp style=\"margin:10px 0 0;\"\u003e\u003cstrong\u003eDo not replace the powerhead if:\u003c\/strong\u003e the valve body is leaking at the compression joints, the ball is seized closed (will not manual-lever open), or the valve is a pre-1987 non-replaceable-head model without first obtaining the 40003918-006 plate kit.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:8px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ Part No.\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHoneywell Home (Resideo) — \u003cstrong\u003e40003916-001\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCompatible Valves\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eV4043H1056 (22mm) · V4043H1106 (28mm) · V4043H1080 (1\" BSP) · V4043C series\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e230VAC 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e6W\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eSwitch Rating\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2.2A (inductive and resistive)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eEnd Switch\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eIncluded — potential-free auxiliary switch\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAction\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eMotor open — spring return (fail-safe closed)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax Static Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e8.6 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eElectrical Connection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e1m pre-wired heat-resistant flying lead, 5-core\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFastening\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2 screws + 2 locating pegs to valve body\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eDrain-Down Required\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003eNo\u003c\/strong\u003e — valve body remains in pipework\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePre-1987 Valve Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eRequires 40003918-006 Plate \u0026amp; Ball Kit first (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eStandards\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003eCE · UL · CSA — 89\/336\/EEC \u0026amp; 73\/23\/EEC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":63010584166749,"sku":"40003916-001\/U","price":53.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeV4043HSeriesReplacementHead40003916-001.jpg?v=1767350694"},{"product_id":"honeywell-home-bdr91a-wireless-relay-box-bdr91a1000-evohome-compatible-rf-boiler-receiver","title":"Honeywell Home BDR91A Wireless Relay Box | BDR91A1000 | evohome Compatible RF Boiler Receiver","description":"\u003cstyle\u003e\n.qh-pd, .qh-pd *::before, .qh-pd *::after { box-sizing: border-box; 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left: 0; color: #c0392b; font-weight: 700; }\n.qh-pd .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }\n@media (max-width: 620px) {\n.qh-pd .two-col { grid-template-columns: 1fr; }\n}\n.qh-pd .section-label { font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: #888; margin-bottom: 0.6rem; margin-top: 1.6rem; }\n.qh-pd .spec-table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; font-size: 14px; }\n.qh-pd .spec-table td { padding: 8px 12px; border-bottom: 1px solid #eee; vertical-align: top; }\n.qh-pd .spec-table tr:nth-child(even) td { background: #faf8f4; }\n.qh-pd .spec-table tr:nth-child(odd)  td { background: #fff; }\n.qh-pd .spec-table td:first-child { font-weight: 600; color: #333; width: 40%; }\n.qh-pd .compat-table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; font-size: 14px; box-shadow: 0 1px 4px rgba(0,0,0,0.08); border-radius: 8px; overflow: hidden; }\n.qh-pd .compat-table thead tr { background: #1a1a2e; color: #fff; }\n.qh-pd .compat-table th { padding: 10px 14px; text-align: left; font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 700; }\n.qh-pd .compat-table td { padding: 9px 14px; border-bottom: 1px solid #eee; font-size: 14px; vertical-align: top; }\n.qh-pd .compat-table tr:last-child td { border-bottom: none; }\n.qh-pd .compat-table tr:nth-child(even) td { background: #faf8f4; }\n.qh-pd .compat-table tr:nth-child(odd)  td { background: #fff; }\n.qh-pd .tick { color: #1b7a40; font-size: 16px; font-weight: 700; }\n.qh-pd .cross { color: #b71c1c; font-size: 16px; font-weight: 700; }\n.qh-pd .callout { padding: 0.8rem 1.1rem; border-radius: 0 6px 6px 0; margin: 0.8rem 0; font-size: 14.5px; }\n.qh-pd .callout-orange { background: #fff3e0; border-left: 4px solid #e8720c; color: #4a2500; }\n.qh-pd .callout-blue { background: #e8f4fd; border-left: 4px solid #1565c0; color: #0a2a50; }\n.qh-pd .callout-green { background: #e8f5e9; border-left: 4px solid #1b7a40; color: #0a2a18; }\n.qh-pd .sku-block { background: #1a1a2e; color: #fff; border-radius: 8px; padding: 1rem 1.2rem; margin-bottom: 1.5rem; font-size: 14px; display: flex; flex-wrap: wrap; gap: 1.5rem; }\n.qh-pd .sku-block .sku-item strong { display: block; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: #aaa; margin-bottom: 3px; }\n.qh-pd .sku-block .sku-item span { font-family: 'Courier New', monospace; font-size: 15px; color: #f9a825; font-weight: 700; }\n.qh-pd .faq-item { border-bottom: 1px solid #e8e8e8; padding: 0.75rem 0; }\n.qh-pd .faq-item:last-child { border-bottom: none; }\n.qh-pd .faq-q { font-weight: 700; font-size: 15px; color: #1a1a2e; margin-bottom: 0.3rem; }\n.qh-pd .faq-a { font-size: 14.5px; color: #444; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"qh-pd\"\u003e\n\u003c!-- Badges --\u003e\n  \u003cdiv class=\"badge-row\"\u003e\n    \u003cspan class=\"badge b-red\"\u003eHoneywell Home\u003c\/span\u003e\n    \u003cspan class=\"badge b-navy\"\u003eWireless RF 868 MHz\u003c\/span\u003e\n    \u003cspan class=\"badge b-green\"\u003eevohome Compatible\u003c\/span\u003e\n    \u003cspan class=\"badge b-blue\"\u003e5A Switching\u003c\/span\u003e\n    \u003cspan class=\"badge b-orange\"\u003e230V or Volt-Free\u003c\/span\u003e\n    \u003cspan class=\"badge b-grey\"\u003eRamses II Protocol\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- SKU block --\u003e\n  \u003cdiv class=\"sku-block\"\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eMPN\u003c\/strong\u003e\n      \u003cspan\u003eBDR91A1000\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eModel Name\u003c\/strong\u003e\n      \u003cspan\u003eBDR91A\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eEAN\u003c\/strong\u003e\n      \u003cspan\u003e5025121385114\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eMax Switching Current\u003c\/strong\u003e\n      \u003cspan\u003e5A\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"sku-item\"\u003e\n      \u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\n      \u003cspan\u003e230V AC mains (permanent)\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Description --\u003e\n  \u003cp class=\"prod-desc\"\u003e\n    The Honeywell Home BDR91A is a mains-powered wireless relay module that acts as the switching interface between a Honeywell Home RF heating controller and a boiler, pump, motorised valve, electric towel rail, or other heating appliance. It receives demand signals over the 868 MHz Ramses II RF protocol and switches the connected load on and off accordingly, replacing the need for a direct wired link between thermostat and appliance. The BDR91A is compatible with the full range of Honeywell Home 868 MHz wireless controls including evohome, DT4R, DT92E, CM927, CM921, and the Sundial RF² range, making it the correct receiver to specify when evohome integration or compatibility with home automation and heating control systems is required. It supports both 230V switching and volt-free (potential-free) switching up to 5A, covering the majority of residential and light commercial heating applications. A binding procedure is required on installation to pair the BDR91A with the controlling device.\n  \u003c\/p\u003e\n\n  \u003c!-- Features --\u003e\n  \u003cdiv class=\"section-label\"\u003eKey Features\u003c\/div\u003e\n  \u003cul class=\"feat-list\"\u003e\n    \u003cli\u003eevohome compatible — the correct receiver to use when connecting to the Honeywell Home evohome system or home automation platforms\u003c\/li\u003e\n    \u003cli\u003e868 MHz Ramses II RF protocol — compatible with the full range of Honeywell Home wireless heating controls\u003c\/li\u003e\n    \u003cli\u003e230V switched output or volt-free (potential-free) switching — suits boilers, pumps, motorised valves, electric towel rails and more\u003c\/li\u003e\n    \u003cli\u003e5A maximum switching current — covers the vast majority of residential heating components\u003c\/li\u003e\n    \u003cli\u003ePermanent 230V mains supply — no batteries required; always on and ready to receive RF commands\u003c\/li\u003e\n    \u003cli\u003eLED status indication — green LED confirms relay state; red LED indicates RF communication loss\u003c\/li\u003e\n    \u003cli\u003eFailsafe mode — if RF communication is lost, relay operates in a configurable failsafe state\u003c\/li\u003e\n    \u003cli\u003eBinding procedure — pairs the relay to the specific controller during commissioning; one-to-one relationship\u003c\/li\u003e\n    \u003cli\u003eInstall at least 30cm from metal objects — including wall boxes and boiler housing, for best RF performance\u003c\/li\u003e\n    \u003cli\u003eCompatible with DT4R, DT92E, CM927, CM921, evohome, Sundial RF² and other Honeywell Home 868 MHz products\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"callout callout-green\"\u003e\n    ✓ \u003cstrong\u003eRequired for evohome and home automation integration:\u003c\/strong\u003e The BDR91A is the relay module needed when the switching function must be managed by the Honeywell Home evohome controller or integrated into a broader home automation or heating control system. It is also the correct replacement for the DT4R pack receiver in any installation requiring evohome compatibility.\n  \u003c\/div\u003e\n\n  \u003c!-- Compatibility --\u003e\n  \u003cdiv class=\"section-label\"\u003eCompatible Honeywell Home Controllers\u003c\/div\u003e\n  \u003ctable class=\"compat-table\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eController \/ System\u003c\/th\u003e\n        \u003cth\u003eCompatible?\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHoneywell Home evohome\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003ePrimary use case — evohome controller manages boiler demand via BDR91A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDT4R wireless room thermostat (YT42WRFT20 \/ YT42GRFT21 \/ YT42BRFT22)\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eReplaces the basic relay included in the DT4R pack for evohome-compatible installations\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eDT92E \/ DT92E1000\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eStandard pairing for the DT92E wireless thermostat range\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCM927 \/ CM921 wireless programmable thermostat\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eFully compatible; standard pairing for CM927 \/ CM921 installations\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSundial RF² range\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eCompatible with the complete Sundial RF² product family\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHCW80 \/ T87RF wireless controls\u003c\/td\u003e\n        \u003ctd class=\"tick\"\u003e✓\u003c\/td\u003e\n        \u003ctd\u003eConfirmed compatible with Honeywell Home 868 MHz Ramses II devices\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHeat pump (on\/off demand)\u003c\/td\u003e\n        \u003ctd class=\"cross\"\u003e✗\u003c\/td\u003e\n        \u003ctd\u003eThe BDR91A is not suitable for heat pump applications — specify the BDR91T1004 (post-2021, with house symbol) for heat pump installations\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNon-Honeywell \/ different RF frequency controllers\u003c\/td\u003e\n        \u003ctd class=\"cross\"\u003e✗\u003c\/td\u003e\n        \u003ctd\u003eThe BDR91A will only communicate with Honeywell Home 868 MHz Ramses II devices\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- Specs --\u003e\n  \u003cdiv class=\"section-label\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003cdiv class=\"two-col\"\u003e\n    \u003ctable class=\"spec-table\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eResideo (Honeywell Home)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eBDR91A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eBDR91A1000\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEAN\u003c\/td\u003e\n\u003ctd\u003e5025121385114\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRadio Frequency\u003c\/td\u003e\n\u003ctd\u003e868 MHz ISM band\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRF Protocol\u003c\/td\u003e\n\u003ctd\u003eRamses II\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n    \u003ctable class=\"spec-table\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMains Supply\u003c\/td\u003e\n\u003ctd\u003e230V AC 50–60Hz (permanent)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMax Switching Current\u003c\/td\u003e\n\u003ctd\u003e5A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSwitching Type\u003c\/td\u003e\n\u003ctd\u003e230V switched or volt-free (potential-free)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eWire Cross-Section\u003c\/td\u003e\n\u003ctd\u003e1.5–2.5mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLED Indicators\u003c\/td\u003e\n\u003ctd\u003eGreen (relay active) · Red (RF communication lost)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFailsafe\u003c\/td\u003e\n\u003ctd\u003eConfigurable via installer mode\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Callouts --\u003e\n  \u003cdiv class=\"callout callout-blue\"\u003e\n    ℹ️ \u003cstrong\u003eBinding required:\u003c\/strong\u003e The BDR91A must be bound (paired) to the controlling device before use. If replacing an existing unit or adding to an existing system, reset stored binding data first and follow the binding procedure in the installation guide. The BDR91A can only communicate with the single device it is bound to.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"callout callout-orange\"\u003e\n    ⚠️ \u003cstrong\u003eNot suitable for heat pumps:\u003c\/strong\u003e The BDR91A does not support heat pump applications. For heat pump installations using Honeywell Home RF controls, the BDR91T1004 (post-2021 version, identifiable by the house symbol on the front cover) is required instead.\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ --\u003e\n  \u003cdiv class=\"section-label\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eWhat is the difference between the BDR91A and the receiver included with the DT4R pack?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eThe relay receiver supplied with the DT4R wireless thermostat pack (YT42WRFT20 etc.) is a basic relay for standalone boiler switching only and is not compatible with the evohome system or other home automation and heating control platforms. The BDR91A is the correct receiver to specify when evohome integration is needed, or when the relay must be managed by a central heating controller rather than the thermostat alone.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eCan I use one BDR91A with multiple thermostats or controllers?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eNo. The BDR91A operates on a one-to-one basis — it can only be bound to a single controlling device at a time. For multi-zone installations, a separate BDR91A is required for each zone or appliance being switched.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eDoes the BDR91A work with the DT4R thermostat?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes. The DT4R thermostat is compatible with the BDR91A via the Ramses II RF protocol. This combination is the correct pairing for any DT4R installation that also needs evohome compatibility or integration with a home automation system.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eDoes it need batteries?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eNo. The BDR91A requires a permanent 230V AC mains supply. It must be wired into the mains at installation — it cannot operate on battery power.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eWhat does the red LED indicate?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eA red LED indicates that RF communication with the bound controller has been lost. In this state, the relay enters failsafe mode as configured during installation. If the red LED appears during normal operation, check for obstructions between the BDR91A and the controller, and ensure the unit is not mounted on or near metal objects.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eCan it switch volt-free (potential-free) contacts?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes. In addition to 230V switching, the BDR91A supports volt-free (potential-free) switching, making it suitable for applications where only a clean contact closure is required rather than a mains-switched output — for example, certain boiler demand inputs and zone valve actuators.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":63620418634077,"sku":"BDR91A","price":57.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/BDR91A1000-Honeywell-Home-Wireless-Receiver-Relay-Module-5A.jpg?v=1772034709"},{"product_id":"honeywell-home-40003916-003-u-replacement-actuator-powerhead-v4073a-3-port-mid-position-5-wire-motorised-valve","title":"Honeywell Home 40003916-003\/U Replacement Actuator Powerhead V4073A 3-Port Mid-Position 5-Wire Motorised Valve","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    The \u003cstrong\u003eHoneywell Home 40003916-003\/U\u003c\/strong\u003e is the genuine replacement powerhead (actuator assembly) for \u003cstrong\u003eHoneywell V4073A 3-port mid-position motorised valves\u003c\/strong\u003e — the standard 5-wire valve used in Y-plan central heating systems across the UK. When a V4073A head develops a fault — humming motor, stuck mid-position, failure to open or close, seized manual lever — this powerhead replaces the entire electrical and mechanical assembly \u003cstrong\u003ewithout removing the valve body from the pipework and without draining the system\u003c\/strong\u003e (on post-1987 valves). Fitting requires only \u003cstrong\u003etwo screws and two locating pegs\u003c\/strong\u003e, takes around 30 minutes, and avoids the disruption and cost of a full valve replacement. Compatible with V4073A1039, V4073A1054, V4073A1062, and V4073A1088. \u003cstrong\u003e230V ~ 50Hz · 6W · 1m lead supplied\u003c\/strong\u003e. Spring-return operation. Maximum static pressure \u003cstrong\u003e8.6 bar\u003c\/strong\u003e. GTIN 5023220401476. \u003cstrong\u003e1-year manufacturer's warranty\u003c\/strong\u003e (Honeywell Home by Resideo).\n  \u003c\/p\u003e\n\n  \u003c!-- ── AMBER PRE-1987 CALLOUT ────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #e67e22;background:#fef9f0;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b7580a;\"\u003e⚠ Pre-1987 Valves Require an Additional Adaptor Kit — How to Check\u003c\/strong\u003e\u003cbr\u003e\n    V4073A valves made \u003cstrong\u003eafter 1987\u003c\/strong\u003e can accept this powerhead directly, without draining — identified by a \u003cstrong\u003esmall circular bump on the top cover\u003c\/strong\u003e of the existing head and an OS suffix number of \"6\" or higher. Valves made \u003cstrong\u003ebefore 1987\u003c\/strong\u003e have a flat cover with no bump and use four screws (not two) to secure the head — these require the \u003cstrong\u003e40003918-007 adaptor kit\u003c\/strong\u003e (sold separately) before the 40003916-003 can be fitted. Fitting the new head to an old-style body without the adaptor kit will result in an insecure connection and potential water leakage. If in doubt, count the screws on the existing head: two screws = new style (no adaptor needed); four screws = old style (adaptor required).\n  \u003c\/div\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ─────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Isolate Power Before Work — Qualified Electrician for Rewiring\u003c\/strong\u003e — Switch off all power supplies to the heating system before removing the existing head. Carefully note the position and colour of each existing wire before disconnecting. The wiring diagram in the installation instructions must be followed precisely — incorrect connection of the 5 wires can result in both heating and hot water firing simultaneously, neither zone operating, or damage to thermostats. Where the old head is a 6-wire type (pre-1990 installations with external relay), specific wiring changes are required — see the Honeywell installation guide (95C-10656).\n  \u003c\/div\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;\"\u003eV4073A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMid-position valve\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;\"\u003e5-wire\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eY-plan systems\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;\"\u003eNo drain\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003ePost-1987 valves\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;\"\u003e6W\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003ePower consumption\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:90px;background:#008377CF;color:#fff;border-radius:6px;padding:11px 8px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;\"\u003e8.6 bar\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eMax static pressure\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── FEATURES GRID ──────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n  \u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px;background:#e6f4f3;padding:14px;border-radius:0 0 6px 6px;margin-bottom:22px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ No System Drain — Post-1987 Direct Swap\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eOn \u003cstrong\u003epost-1987 V4073A valves\u003c\/strong\u003e (identified by the bump on the cover), the powerhead can be replaced \u003cstrong\u003ewithout draining the heating system\u003c\/strong\u003e. The valve body remains in the pipework; the existing head is removed with two screws; the replacement head is fitted with the manual lever in the MAN. OPEN position to seat it correctly, secured with the two supplied screws, and wired back. This eliminates the disruption of draining, refilling, bleeding, and recommissioning the entire system — which on a pressurised sealed system can add an hour or more to what is otherwise a straightforward component swap. The system pressure is maintained throughout; only the actuator assembly is disturbed.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Genuine Honeywell Part — OEM Quality\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThis is the \u003cstrong\u003egenuine Honeywell Home (Resideo) replacement powerhead\u003c\/strong\u003e — manufactured by Pittway Sarl in Hungary to the same specification as the original factory-fitted head. The motor, microswitch assembly, spring-return mechanism, and manual lever are all OEM components. Using the genuine part ensures correct torque specification for the valve stem, correct microswitch switching points for the auxiliary switch output (which signals the boiler and pump), and the spring-return force matched to the V4073A body's flow characteristic. Third-party substitute heads may not match these parameters, risking intermittent operation or incomplete valve travel.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Spring-Return Mid-Position Operation\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe V4073A mid-position valve — and therefore this replacement head — uses \u003cstrong\u003espring-return action\u003c\/strong\u003e to deliver the valve's three operating states: \u003cstrong\u003ehot water only\u003c\/strong\u003e (valve in HW port, spring holds the diverter closed to CH), \u003cstrong\u003emid-position\u003c\/strong\u003e (both HW and CH ports open — motor powered against spring), and \u003cstrong\u003ecentral heating only\u003c\/strong\u003e (valve fully driven, HW port closed). The spring return ensures that on power loss, the valve defaults to the hot water position — a fail-safe behaviour built into Y-plan system design. The motor drives the valve against the spring to reach mid-position; the auxiliary microswitch fires when both circuits are satisfied by the boiler.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Manual Lever — AUTO and MAN. OPEN Positions\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe powerhead incorporates a \u003cstrong\u003emanual override lever\u003c\/strong\u003e with two positions: \u003cstrong\u003eAUTO\u003c\/strong\u003e (normal electrical operation) and \u003cstrong\u003eMAN. OPEN\u003c\/strong\u003e (valve held physically open for drain-down or system filling). Moving the lever to MAN. OPEN allows water to flow through the valve regardless of whether the motor is powered — essential for filling a pressurised sealed system or bleeding the system after maintenance work. The lever must be returned to \u003cstrong\u003eAUTO before normal operation resumes\u003c\/strong\u003e; leaving it in MAN. OPEN will bypass all thermostat control. During the head replacement procedure, the lever is placed in MAN. OPEN to allow the head to seat correctly on the valve body shaft.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ 1 Metre Pre-Wired Lead Supplied\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eThe replacement head is supplied \u003cstrong\u003efactory-wired with a 1 metre lead\u003c\/strong\u003e terminated in the standard 5-wire colour code used in UK Y-plan heating systems. The five conductors are: \u003cstrong\u003eneutral (blue), live 230V in (brown), orange (HW demand — drives motor to mid-position), white (CH demand — drives motor fully open), grey (auxiliary switch output — fires boiler and pump)\u003c\/strong\u003e. The supplied lead length is sufficient for most installations where the junction box is located adjacent to the valve; where longer runs are needed, the existing junction box wiring is retained and only the short tail from head to junction box is replaced.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9;border:1px solid #c8e6e3;border-radius:6px;padding:13px;\"\u003e\n      \u003cdiv style=\"font-weight:700;color:#008377CF;margin-bottom:5px;\"\u003e✔ Save vs Full Valve Replacement\u003c\/div\u003e\n      \u003cdiv style=\"font-size:14px;\"\u003eWhen a V4073A motorised valve fails, the instinctive response is often to replace the entire valve — body, connections, and all. In the majority of cases, \u003cstrong\u003eonly the powerhead has failed\u003c\/strong\u003e: the valve body, seats, and pipework connections are sound and have decades of remaining service life. Replacing only the powerhead with this genuine part avoids cutting into the pipework, replacing compression fittings or solder joints, and the associated risk of joint failure after reassembly. The cost and labour saving over a full valve replacement is significant, and the result is functionally identical — the same new motor and microswitch assembly is installed in either case.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ── COMPATIBILITY TABLE ────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eCompatible V4073A Valve Models\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n        \u003cth style=\"padding:9px 12px;text-align:left;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eValve Model\u003c\/th\u003e\n        \u003cth style=\"padding:9px 12px;text-align:left;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eNotes\u003c\/th\u003e\n        \u003cth style=\"padding:9px 12px;text-align:left;font-weight:600;border-bottom:2px solid #008377CF;\"\u003eAdaptor Required?\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eV4073A1039\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #c8e6e3;\"\u003ePost-1987 — bump visible on cover\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #c8e6e3;\"\u003eNo — direct fit\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eV4073A1054\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #c8e6e3;\"\u003ePost-1987 — bump visible on cover\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #c8e6e3;\"\u003eNo — direct fit\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eV4073A1062\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #c8e6e3;\"\u003ePost-1987 — bump visible on cover\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #c8e6e3;\"\u003eNo — direct fit\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eV4073A1088\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #c8e6e3;\"\u003ePost-1987 — bump visible on cover\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border-bottom:1px solid #c8e6e3;\"\u003eNo — direct fit\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-weight:600;\"\u003ePre-1987 V4073 (OS suffix \u0026lt;6, no bump, 4 screws)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003eFlat cover, four-screw attachment\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;\"\u003e\u003cstrong\u003eYes — 40003918-007 adaptor kit required\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── SPEC TABLE ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eTechnical Specifications — 40003916-003\/U\u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;width:44%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer \/ MPN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHoneywell Home (by Resideo) — \u003cstrong\u003e40003916-003\/U\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGTIN\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e5023220401476\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eReplacement powerhead for V4073A 3-port mid-position motorised valves — 5-wire Y-plan systems\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e230V ~ 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e6W\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eLead Supplied\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\n\u003cstrong\u003e1 metre\u003c\/strong\u003e — 5-wire colour-coded\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eValve Operation\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSpring-return — mid-position (3-port)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Load (Inductive)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2.2A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Load (Resistive)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2.2A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Static Pressure\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e8.6 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOperating Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e+5°C to +88°C (fluid)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eMax. Ambient Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e+52°C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eManual Override\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eYes — AUTO \/ MAN. OPEN lever\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eFixing Method\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2 screws + 2 locating pegs (new-style bodies)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGross Weight (inc. packaging)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e0.522 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eHungary (manufactured by Pittway Sarl for European region)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBritish Gas Reference\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e378454\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e1 year\u003c\/strong\u003e — Honeywell Home manufacturer's warranty\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;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhat is the difference between the \"-003\" and \"-001\" suffix — can I use \"-001\" on a 3-port valve?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003e\n\u003cstrong\u003eNo\u003c\/strong\u003e — the suffix matters. The \u003cstrong\u003e40003916-003\/U\u003c\/strong\u003e is the \u003cstrong\u003e5-wire head for the V4073A mid-position (3-port) valve\u003c\/strong\u003e used in Y-plan systems — it contains the motor, spring, and microswitch wired for both heating and hot water demand signals plus the auxiliary boiler output. The \u003cstrong\u003e40003916-001\u003c\/strong\u003e is the 2-wire head for 2-port zone valves (V4043\/V4044 series) used in S-plan systems — different internal wiring, different microswitch function, different mechanical travel. Fitting a \"-001\" head to a 3-port body, or vice versa, will result in incorrect valve function and potential wiring damage.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eMy valve is humming but not moving — is the powerhead definitely the cause?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eA continuous hum with no valve movement is a strong indicator of a \u003cstrong\u003emotor winding failure or seized motor\u003c\/strong\u003e — typically the powerhead. However, before replacing, it is worth checking: (1) the manual lever — if it has been left in MAN. OPEN, the valve won't respond to electrical signals; (2) the wiring connections — a loose or corroded terminal can cause erratic behaviour; (3) the valve body itself — in rare cases the spindle can seize in the body rather than the motor failing. To test the body independently, move the manual lever to MAN. OPEN and check if water flows through the correct port. If the body appears free and the wiring is sound, the powerhead is almost certainly the fault. Replacing the powerhead first is the correct diagnostic step before considering full valve replacement.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eAfter fitting, my central heating and hot water both come on together — what's wrong?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eThis is the most common post-installation symptom and is almost always a \u003cstrong\u003ewiring error\u003c\/strong\u003e, not a faulty head. The five wires from the valve connect to: neutral (blue), live (brown), hot water demand (orange — drives motor to mid-position), central heating demand (white — drives motor fully open), and auxiliary output (grey — fires the boiler\/pump). If orange and white are swapped, both zones will fire simultaneously. Cross-reference your wiring against the Honeywell installation guide 95C-10656, paying particular attention to the auxiliary switch output on grey — this wire must only be connected once the valve reaches its end position. If replacing a 6-wire valve with an internal relay, specific additional wiring changes are required — the brown wire from the old relay is omitted and the cylinder thermostat C and 1 terminals must be reversed.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eDo I need to isolate the boiler before replacing the head?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — \u003cstrong\u003eall electrical power to the heating system must be isolated\u003c\/strong\u003e before starting work. This means switching off at the programmer\/time control, at the system's unswitched fused spur, or at the consumer unit's heating circuit. The valve operates at 230V and is connected to the wiring centre alongside the boiler, pump, and thermostats — live conductors are present in the junction box and at the valve terminals even when the heating is not actively calling. A shock from incorrectly isolated wiring at a junction box is a serious risk. Isolation must be confirmed with a voltage tester before any electrical connections are disturbed.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eCan this head convert a 3-port diverter valve to a mid-position valve?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — in principle. A 3-port diverter (V4043 body) and a 3-port mid-position valve (V4073A body) use a similar physical construction, and the 40003916-003 powerhead can be fitted to a V4043 body, converting it electrically from a diverter to a mid-position configuration. The full Y-plan wiring (5-wire: neutral, live, orange HW, white CH, grey auxiliary) must then be connected correctly. However, \u003cstrong\u003ebefore doing this, confirm the V4043 body valve seats are compatible with mid-position operation\u003c\/strong\u003e — a diverter valve is designed to fully route flow to one port or the other, while a mid-position valve is designed to allow partial flow through both ports simultaneously. If the body seating is not designed for this, mid-position flow balance may not be correct. Consult the Honeywell installation guide and a qualified heating engineer before proceeding.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":64292701602141,"sku":"40003916-003\/U","price":99.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/head-40003916-003-honeywell.webp?v=1776842078"},{"product_id":"honeywell-home-t6360b1028-room-thermostat-mains-voltage-wired-room-thermostat-with-heat-anticipator","title":"Honeywell Home T6360B1028 Room Thermostat - Mains Voltage Wired Room Thermostat with Heat Anticipator","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  \u003c!-- Intro --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003eThe \u003cstrong\u003eHoneywell Home T6360B1028\u003c\/strong\u003e is a \u003cstrong\u003emains voltage wired room thermostat\u003c\/strong\u003e built for reliable, automatic temperature control in domestic wet central heating systems. With a \u003cstrong\u003edual diaphragm temperature sensing element\u003c\/strong\u003e, a built-in \u003cstrong\u003eheat anticipator for ±0.5 °C accuracy\u003c\/strong\u003e, and \u003cstrong\u003eRFI suppression\u003c\/strong\u003e, this thermostat is the go-to choice for engineers wanting dependable on\/off control without complexity. It directly switches a \u003cstrong\u003ecirculating pump or boiler\u003c\/strong\u003e, operates \u003cstrong\u003espring-return and motor open\/close zone valves\u003c\/strong\u003e, and can handle \u003cstrong\u003eelectrical heating loads up to 10 A (resistive)\u003c\/strong\u003e — all from a compact 84 × 84 × 37 mm wall-mount unit. The T6360B1028 is also \u003cstrong\u003eBoiler Plus compliant\u003c\/strong\u003e when used alongside a timer or programmer on system boilers.\u003c\/p\u003e\n\n  \u003c!-- Stat strip --\u003e\n  \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:0 0 24px;\"\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 12px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700;\"\u003e10–30 °C\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eSetpoint Range\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 12px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700;\"\u003e10 A\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eResistive Load (T3)\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 12px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700;\"\u003e±0.5 °C\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eControl Accuracy\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 12px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700;\"\u003e230 V\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eMains Voltage\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#fff; border-radius:8px; padding:14px 12px; text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:22px; font-weight:700;\"\u003eErP Class I\u003c\/div\u003e\n      \u003cdiv style=\"font-size:13px; margin-top:4px;\"\u003eEnergy Rating\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Red callout: installer requirement --\u003e\n  \u003cdiv style=\"background:#fff5f5; border-left:4px solid #c0392b; border-radius:6px; padding:14px 16px; margin:0 0 16px;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Installer Notice\u003c\/strong\u003e\u003cbr\u003e\n    This thermostat operates at \u003cstrong\u003e230 V AC mains voltage\u003c\/strong\u003e. Installation must be carried out by a \u003cstrong\u003equalified electrician or competent heating engineer\u003c\/strong\u003e in accordance with the current edition of the IET Wiring Regulations (BS 7671). Ensure the circuit is isolated and proved dead before working on terminals.\n  \u003c\/div\u003e\n\n  \u003c!-- Amber callout: siting guidance --\u003e\n  \u003cdiv style=\"background:#fffbf0; border-left:4px solid #e67e22; border-radius:6px; padding:14px 16px; margin:0 0 16px;\"\u003e\n    \u003cstrong style=\"color:#e67e22;\"\u003e⚠ Siting Guidance\u003c\/strong\u003e\u003cbr\u003e\n    Do \u003cstrong\u003enot\u003c\/strong\u003e position the thermostat where it is exposed to \u003cstrong\u003edirect sunlight, extraneous heat sources, or draughts\u003c\/strong\u003e. False readings from these sources will prevent the thermostat from maintaining accurate room temperature. An interior wall at approximately 1.5 m height, away from windows and radiators, is the recommended location.\n  \u003c\/div\u003e\n\n  \u003c!-- Teal callout: Boiler Plus --\u003e\n  \u003cdiv style=\"background:#e6f4f3; border-left:4px solid #008377; border-radius:6px; padding:14px 16px; margin:0 0 24px;\"\u003e\n    \u003cstrong style=\"color:#005c54;\"\u003eⓘ Boiler Plus Compliance\u003c\/strong\u003e\u003cbr\u003e\n    The T6360B1028 is \u003cstrong\u003eBoiler Plus compliant for system boilers\u003c\/strong\u003e when installed alongside a compatible programmer or timer. This satisfies the time and temperature control requirements of Part L of the Building Regulations for England.\n  \u003c\/div\u003e\n\n  \u003c!-- Feature cards --\u003e\n  \u003cdiv style=\"background:#008377CF; color:#fff; padding:10px 16px; border-radius:6px 6px 0 0; font-weight:700; font-size:15px; margin-bottom:0;\"\u003eKey Features\u003c\/div\u003e\n  \u003cdiv style=\"display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:14px; background:#e6f4f3; border:1px solid #c8e6e3; border-top:none; border-radius:0 0 6px 6px; padding:16px; margin:0 0 28px;\"\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eDual Diaphragm Sensing\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eThe \u003cstrong\u003edual diaphragm temperature sensing element\u003c\/strong\u003e responds accurately across all load types and applications. Combined with the built-in \u003cstrong\u003eheat anticipator\u003c\/strong\u003e, it achieves a tight control accuracy of \u003cstrong\u003e±0.5 °C at a 3 K\/hour rate of temperature change\u003c\/strong\u003e — reducing temperature overshoot and improving comfort.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eSPDT Changeover Contacts\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eThe \u003cstrong\u003esingle pole, double throw (SPDT) switching action\u003c\/strong\u003e provides \u003cstrong\u003echangeover contacts\u003c\/strong\u003e, making the T6360B1028 equally suited to \u003cstrong\u003eheating and cooling applications\u003c\/strong\u003e. Terminal 3 handles up to \u003cstrong\u003e10 A resistive \/ 3 A inductive\u003c\/strong\u003e; Terminal 4 supports \u003cstrong\u003e6 A resistive \/ 2 A inductive\u003c\/strong\u003e loads.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eRFI Suppression Built In\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eAn integrated \u003cstrong\u003eRFI (radio-frequency interference) suppressor\u003c\/strong\u003e prevents switching noise from the thermostat contacts from disrupting other electronic equipment in the property — important in modern homes with smart devices, Wi-Fi networks, and digital audio equipment nearby.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eDouble Insulated — No Earth Required\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eThe T6360B1028 is \u003cstrong\u003edouble insulated to Class II\u003c\/strong\u003e, meaning \u003cstrong\u003eno earth wire is needed\u003c\/strong\u003e for safe operation. This simplifies installation, particularly in older properties where an earth conductor may not be present at the thermostat position.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eFlexible Mounting Options\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eSuitable for \u003cstrong\u003esurface mounting\u003c\/strong\u003e directly onto the wall or for fitting to a standard \u003cstrong\u003eflush switch box\u003c\/strong\u003e. Fixing screws for both methods are supplied in the box. The slim 37 mm depth keeps the unit unobtrusive wherever it is installed.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#f0faf9; border:1px solid #c8e6e3; border-radius:6px; padding:16px;\"\u003e\n      \u003cdiv style=\"font-weight:700; color:#008377; border-bottom:2px solid #008377; padding-bottom:6px; margin-bottom:10px;\"\u003eSecure Terminal Clamps\u003c\/div\u003e\n      \u003cp style=\"margin:0; font-size:14px;\"\u003eImproved, \u003cstrong\u003eeasy-to-wire terminals with built-in conductor clamps\u003c\/strong\u003e grip cable conductors securely and resist pull-out — reducing the risk of a loose connection causing intermittent heating faults over the life of the installation.\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-weight:700; font-size:15px;\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin:0 0 28px; font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; width:42%; border-bottom:1px solid #c8e6e3;\"\u003eManufacturer Part Number\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eT6360B1028\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eVoltage Rating\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e230 V AC ±10%, 50\/60 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eSwitch Type\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eSingle Pole, Double Throw (SPDT) — changeover contacts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eSwitch Rating — Terminal 3\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e10 A resistive \/ 3 A inductive\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eSwitch Rating — Terminal 4\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e6 A resistive \/ 2 A inductive\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eTemperature Setpoint Range\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e10 °C to 30 °C\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eControl Accuracy\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e±0.5 °C at 3 K\/hour (with anticipator)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eSensing Element\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eDual diaphragm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eInsulation Class\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eClass II (double insulated — no earth required)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eErP Rating\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eClass I\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eDimensions (H × W × D)\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e84 mm × 84 mm × 37 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eWeight\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e0.19 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eColour\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eWhite\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eMounting\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eSurface or flush switch box\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e−20 °C to +55 °C\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eHumidity\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003e10–90% RH, non-condensing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600; border-bottom:1px solid #c8e6e3;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px; border-bottom:1px solid #c8e6e3;\"\u003eCE marked; EN60730-1, EN55014-1, EN55014-2; Boiler Plus (system boilers with programmer\/timer)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 12px; font-weight:600;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 12px;\"\u003eHoneywell Home (Resideo)\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-weight:700; font-size:15px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3; border-top:none; border-radius:0 0 6px 6px; margin:0 0 28px; overflow:hidden;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eWhat heating systems is the T6360B1028 compatible with?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eThe T6360B1028 is designed for \u003cstrong\u003edomestic wet central heating systems\u003c\/strong\u003e. It can directly switch a \u003cstrong\u003ecirculating pump or boiler\u003c\/strong\u003e, or operate \u003cstrong\u003espring-return and motor open\/motor close zone valves\u003c\/strong\u003e. It can also be used for \u003cstrong\u003ecooling applications\u003c\/strong\u003e by virtue of its SPDT changeover contacts. The maximum switching load is \u003cstrong\u003e10 A resistive \/ 3 A inductive\u003c\/strong\u003e on Terminal 3, making it suitable for the vast majority of residential heating controls.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eDoes the T6360B1028 need an earth wire?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eNo. The T6360B1028 is \u003cstrong\u003edouble insulated (Class II)\u003c\/strong\u003e, so \u003cstrong\u003eno earth wire is required\u003c\/strong\u003e for operation. This makes it easier to install in older properties where an earth conductor is not available at the thermostat location, though all work must still be carried out by a qualified electrician in accordance with BS 7671.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eWhat is the heat anticipator and why does it matter?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eThe \u003cstrong\u003eheat anticipator\u003c\/strong\u003e is a small resistive heater inside the thermostat that slightly warms the sensing element just before the room reaches the set temperature. This causes the thermostat to switch off the boiler or pump a fraction early, accounting for the residual heat already in the pipework. The result is that the room settles accurately at the target temperature with \u003cstrong\u003eminimal overshoot\u003c\/strong\u003e, delivering the stated \u003cstrong\u003e±0.5 °C control accuracy\u003c\/strong\u003e.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eWhere should the thermostat be positioned for best accuracy?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eThe thermostat should be mounted on an \u003cstrong\u003einterior wall at approximately 1.5 m above floor level\u003c\/strong\u003e, in a room that is representative of the area being controlled (typically the living room or hallway). Avoid positions exposed to \u003cstrong\u003edirect sunlight, draughts, or radiant heat\u003c\/strong\u003e from appliances, as these will cause the thermostat to read incorrectly. Fitting it near an exterior wall or behind a door is also not recommended.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eIs the T6360B1028 Boiler Plus compliant?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eYes — the T6360B1028 satisfies the \u003cstrong\u003eBoiler Plus time and temperature control requirements\u003c\/strong\u003e for \u003cstrong\u003esystem boilers\u003c\/strong\u003e when used alongside a compatible programmer or timer. Note that for \u003cstrong\u003ecombi boilers\u003c\/strong\u003e, Boiler Plus requires additional efficiency measures such as a weather compensator, load compensator, or smart thermostat with automation capability — the T6360 alone does not meet those requirements for combis.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"background:#e6f4f3; padding:12px 16px; font-weight:600; cursor:pointer; list-style:none;\"\u003eCan range stops be fitted to limit the temperature dial?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:12px 16px; font-size:14px;\"\u003eYes. The optional \u003cstrong\u003erange stop accessory (F42006646-001)\u003c\/strong\u003e — a bag of 20 range stops with installation instructions — can be fitted to restrict how far the dial can be turned. This is useful in care homes, rental properties, or commercial settings where you want to prevent users from setting temperatures outside a predetermined range. A \u003cstrong\u003etamper-resistant cover version\u003c\/strong\u003e (T6360B1069) is also available as an alternative.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":64671730303325,"sku":"T6360B1028","price":27.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HoneywellHomeRoomThermostatt6360b1028.webp?v=1778595996"},{"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":29.0,"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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/collections\/Honeywell.png?v=1773651964","url":"https:\/\/qualityheating.co.uk\/collections\/honeywell.oembed","provider":"AIZO Quality Heating","version":"1.0","type":"link"}