{"product_id":"kidde-sentry-1x-kf21-optical-smoke-1x-kf31-heat-alarm-kit-mains-ac-9v-alkaline-battery-back-up-c-w-quick-fit-base","title":"Kidde Sentry 1x KF21 Optical Smoke \u0026 1x KF31 Heat Alarm Kit Mains Powered with 9V Alkaline Battery Back-Up c\/w Quick Fit Base","description":"\u003ch1\u003eKidde Sentry KF21 \u0026amp; KF31 Mains Powered Smoke and Heat Alarm Kit with 9V Battery Back-Up\u003c\/h1\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKidde Sentry Alarm Kit\u003c\/strong\u003e combines the reliable \u003cstrong\u003eKF21 Optical Smoke Alarm\u003c\/strong\u003e and \u003cstrong\u003eKF31 Heat Alarm\u003c\/strong\u003e to provide comprehensive fire detection throughout residential properties. Designed for mains-powered installation, both alarms feature 9V alkaline battery back-up protection and can be interconnected with up to 23 compatible Kidde FIREX alarms for complete home safety coverage.\u003c\/p\u003e\n\n\u003cp\u003eThis convenient alarm combination is ideal for meeting UK Building Regulations in domestic properties, offering dependable smoke and heat detection across living spaces, hallways, kitchens, garages and loft areas.\u003c\/p\u003e\n\n\u003cp\u003eEach alarm is supplied with Kidde’s \u003cstrong\u003eQuick-Fit Slide-On Base\u003c\/strong\u003e for faster installation, while integrated cable management keeps wiring neat and secure. The 150mm flared base also provides a tidy finish when replacing existing alarms.\u003c\/p\u003e\n\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e1 x Kidde KF21 Optical Smoke Alarm\u003c\/li\u003e\n\u003cli\u003e1 x Kidde KF31 Heat Alarm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKF21 Optical Smoke Alarm Features\u003c\/h2\u003e\n\n\u003cp\u003eThe Kidde KF21 optical smoke alarm is designed to detect slow, smouldering fires commonly caused by furniture, electrical faults and cigarettes. Ideal for escape routes and living areas, the alarm provides dependable early warning protection.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eMains-powered optical smoke alarm with 9V alkaline battery back-up\u003c\/li\u003e\n\u003cli\u003eOptical sensor with dust compensation and bug screen\u003c\/li\u003e\n\u003cli\u003eInterconnects with up to 23 Kidde FIREX alarms\u003c\/li\u003e\n\u003cli\u003eAlarm memory identifies the triggered unit\u003c\/li\u003e\n\u003cli\u003eCombined Test\/Hush button\u003c\/li\u003e\n\u003cli\u003eAuto reset after activation\u003c\/li\u003e\n\u003cli\u003eTamper-resistant locking mechanism\u003c\/li\u003e\n\u003cli\u003eSuitable for hallways, bedrooms, lofts and living rooms\u003c\/li\u003e\n\u003cli\u003eBSI certified to BS EN14604:2005\u003c\/li\u003e\n\u003cli\u003e10-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKF31 Heat Alarm Features\u003c\/h2\u003e\n\n\u003cp\u003eThe Kidde KF31 heat alarm is ideal for kitchens, garages and loft spaces where smoke alarms may be affected by steam, cooking fumes or dust. The thermistor heat sensor provides reliable temperature detection without nuisance alarms.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eMains-powered heat alarm with 9V alkaline battery back-up\u003c\/li\u003e\n\u003cli\u003eThermistor heat sensor for reliable heat detection\u003c\/li\u003e\n\u003cli\u003eInterconnects with up to 23 Kidde FIREX alarms\u003c\/li\u003e\n\u003cli\u003eAlarm memory identifies the triggered unit\u003c\/li\u003e\n\u003cli\u003eCombined Test\/Hush button\u003c\/li\u003e\n\u003cli\u003eAuto reset after activation\u003c\/li\u003e\n\u003cli\u003eTamper-resistant locking mechanism\u003c\/li\u003e\n\u003cli\u003eIdeal for kitchens, garages and humid environments\u003c\/li\u003e\n\u003cli\u003eBSI certified to BS 5446 Part 2:2003\u003c\/li\u003e\n\u003cli\u003e10-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete smoke and heat detection solution for residential properties\u003c\/li\u003e\n\u003cli\u003eInterlinked alarms provide whole-home warning when danger is detected\u003c\/li\u003e\n\u003cli\u003eQuick-Fit bases for fast and clean installation\u003c\/li\u003e\n\u003cli\u003eIntegrated cable management for tidy wiring\u003c\/li\u003e\n\u003cli\u003eSuitable for compliance with UK Building Regulations\u003c\/li\u003e\n\u003cli\u003eGrade D fire alarm system solution\u003c\/li\u003e\n\u003cli\u003eFully compatible with Kidde FIREX smoke, heat and CO alarms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ch3\u003eKF21 Optical Smoke Alarm\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e KF21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 230V mains with 9V alkaline battery back-up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Optical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm Volume:\u003c\/strong\u003e 85dB minimum at 3 metres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 150mm x 53mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 295g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -10°C to +40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 10 Years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKF31 Heat Alarm\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e KF31\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 230V mains with 9V alkaline battery back-up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Thermistor heat sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm Volume:\u003c\/strong\u003e 85dB minimum at 3 metres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 150mm x 150mm x 66mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 281g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -10°C to +40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 10 Years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlease Note:\u003c\/strong\u003e Alarms are supplied individually within the kit. Installation should be completed by a qualified electrician.\u003c\/p\u003e\n\n\u003ch2\u003eDownloads\u003c\/h2\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eKF21 Data Sheet:\u003c\/strong\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/a.mktgcdn.com\/f\/4139856\/cLZXN-22ToQPRSsziH882At4tMbmU8m8g_VkuEP2TCY.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload KF21 Data Sheet\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eKF31 Data Sheet:\u003c\/strong\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/a.mktgcdn.com\/f\/4139856\/SITv1sqYJTD_5p71Au0BPbmur0mGCPGQqX8LEHOVsKI.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload KF31 Data Sheet\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eKF21 Instruction Manual:\u003c\/strong\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/a.mktgcdn.com\/f\/4139856\/5E_Cqq3RopAzls8aPoJmvHQMeuuRxjlrsjQeILwJrPw.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload KF21 Instruction Manual\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eKF31 Instruction Manual:\u003c\/strong\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/a.mktgcdn.com\/f\/4139856\/QtetLpZzr0zryso8Up1OCpp-nxIUUER8nD1yW75h6Xg.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload KF31 Instruction Manual\u003c\/a\u003e\n\u003c\/p\u003e","brand":"Kidde","offers":[{"title":"Default Title","offer_id":58118875480448,"sku":"KF21+KF31","price":58.56,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/2349\/2557\/files\/KF21_KF31_Shopify.jpg?v=1779203402","url":"https:\/\/westbasedirect.com\/products\/kidde-sentry-1x-kf21-optical-smoke-1x-kf31-heat-alarm-kit-mains-ac-9v-alkaline-battery-back-up-c-w-quick-fit-base","provider":"westbasedirect.com","version":"1.0","type":"link"}