{"product_id":"kidde-sentry-2x-kf21-optical-smoke-1x-kf31-heat-alarm-kit-mains-ac-9v-alkaline-battery-back-up-c-w-quick-fit-base","title":"Kidde Sentry 2x 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 2x KF21 Optical Smoke \u0026amp; 1x KF31 Heat Alarm Kit with 9V Battery Back-Up\u003c\/h1\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKidde Sentry Alarm Kit\u003c\/strong\u003e combines \u003cstrong\u003etwo KF21 Optical Smoke Alarms\u003c\/strong\u003e and \u003cstrong\u003eone KF31 Heat Alarm\u003c\/strong\u003e to deliver comprehensive fire detection for residential properties. Designed for mains-powered installation, all alarms feature 9V alkaline battery back-up and can be interconnected with up to 23 compatible Kidde FIREX alarms for reliable whole-home protection.\u003c\/p\u003e\n\n\u003cp\u003eThis alarm bundle is ideal for meeting UK Building Regulations in domestic properties, providing dependable smoke detection in living areas and hallways, alongside heat detection in kitchens, garages and loft spaces.\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 allows for a tidy retrofit when replacing existing alarms.\u003c\/p\u003e\n\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e2 x Kidde KF21 Optical Smoke Alarms\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 electrical faults, furniture or cigarettes. Ideal for circulation routes and living spaces, the KF21 provides reliable 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 alarm\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 specifically designed for kitchens, garages and loft spaces where smoke alarms may be unsuitable due to steam, fumes or dust. The thermistor heat sensor delivers dependable heat detection while helping to minimise 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 temperature detection\u003c\/li\u003e\n\u003cli\u003eInterconnects with up to 23 Kidde FIREX alarms\u003c\/li\u003e\n\u003cli\u003eAlarm memory identifies the triggered alarm\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 loft spaces\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 alarm 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 domestic 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 carried out 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":58118875840896,"sku":"KF21x2+KF31","price":79.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/2349\/2557\/files\/KF21x2_KF31_Shopify.jpg?v=1779203402","url":"https:\/\/westbasedirect.com\/products\/kidde-sentry-2x-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"}