{"title":"Mains Powered Smoke Alarms","description":"\u003cp\u003e\u003cstrong\u003eMains powered smoke alarms\u003c\/strong\u003e (also called hard-wired or mains smoke alarms) are connected to the property's mains electricity supply and have a back-up battery that keeps them working during a power cut. This range brings together mains optical and multi-sensor smoke alarms from Aico, Kidde, FireAngel, FireHawk, Hispec, Lumi-Plugin and Wisualarm, with 9V, alkaline, lithium or rechargeable back-up batteries depending on the model. Most can be interlinked by cable or radio so that every alarm sounds together, but the method differs between brands, so check each product page and keep to one manufacturer's system. For kitchens, choose a heat alarm from our \u003ca href=\"\/collections\/smoke-heat-alarms\"\u003esmoke and heat alarms\u003c\/a\u003e range; for alarms with no wiring, see \u003ca href=\"\/collections\/10-year-battery-smoke-alarms\"\u003e10 year battery smoke alarms\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"hispec-mains-powered-fast-fix-optical-smoke-alarm-with-9v-backup-battery-hssa-pe-ff-3","title":"Hispec Mains Powered Fast Fix Optical Smoke Alarm with 9v Backup Battery (HSSA\/PE\/FF)","description":"\u003cp\u003eThe Hispec HSSA\/PE\/FF is a 230V mains-powered, hard-wire interconnectable optical (photoelectric) smoke alarm with a 9V back-up battery included. It is supplied with Hispec's Fast Fix base for quick installation and alarm replacement, and can be interconnected with up to 20 wired Hispec detectors so that all alarms sound together.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHard-wire interconnect up to 20 detectors over a maximum of 80m\u003c\/li\u003e\n\u003cli\u003e9V back-up battery included\u003c\/li\u003e\n\u003cli\u003eFast Fix base included\u003c\/li\u003e\n\u003cli\u003eLoud 85dB alarm\u003c\/li\u003e\n\u003cli\u003eInsect-proof design\u003c\/li\u003e\n\u003cli\u003eTest function and hush feature\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct code: HSSA\/PE\/FF\u003c\/li\u003e\n\u003cli\u003eDetection type: photoelectric (optical) sensor\u003c\/li\u003e\n\u003cli\u003ePower source: 220–240V AC\u003c\/li\u003e\n\u003cli\u003eBattery back-up: 9V battery\u003c\/li\u003e\n\u003cli\u003eOperating current: \u0026lt;40mA\u003c\/li\u003e\n\u003cli\u003eCoverage area: 60m² maximum at 2.4m mounting height\u003c\/li\u003e\n\u003cli\u003eAlarm sound level: 85dB at 3m\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 0°C to 40°C\u003c\/li\u003e\n\u003cli\u003eDimensions: 120 x 120 x 55mm\u003c\/li\u003e\n\u003cli\u003eWeight: 162g\u003c\/li\u003e\n\u003cli\u003eScheme rating: D2\u003c\/li\u003e\n\u003cli\u003eApprovals: BS EN 14604:2005\u003c\/li\u003e\n\u003cli\u003eGuarantee: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hispec","offers":[{"title":"Default Title","offer_id":56784875159925,"sku":"HSSA\/PE\/FF","price":11.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/mainsrfsmoke-1_34eaba9b-7ce3-4beb-b57a-64106edcccdb.jpg?v=1771969956"},{"product_id":"hispec-mains-powered-fast-fix-optical-smoke-alarm-with-lithium-backup-battery-hssa-pe-ff10-3","title":"Hispec Mains Powered Fast Fix Optical Smoke Alarm with Lithium Backup Battery (HSSA\/PE\/FF10)","description":"\u003cp\u003eThe Hispec HSSA\/PE\/FF10 is a 230V mains-powered optical (photoelectric) smoke alarm with a 10-year rechargeable lithium back-up battery. It can be hard-wire interconnected with up to 20 compatible Hispec alarms so that all alarms sound when one is triggered, and it is supplied with Hispec's Fast Fix base for quick installation and replacement. It is approved to BS EN 14604:2005 and suitable for Grade D1 systems under BS 5839-6:2019.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHard-wire interconnect up to 20 detectors\u003c\/li\u003e\n\u003cli\u003e10-year rechargeable lithium battery back-up\u003c\/li\u003e\n\u003cli\u003eOptical smoke sensor; contains no radioactive material\u003c\/li\u003e\n\u003cli\u003eFast Fix base included\u003c\/li\u003e\n\u003cli\u003eLoud 85dB alarm\u003c\/li\u003e\n\u003cli\u003eTest function and hush feature\u003c\/li\u003e\n\u003cli\u003eInsect-proof and tamper-proof\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct code: HSSA\/PE\/FF10\u003c\/li\u003e\n\u003cli\u003eDetection type: photoelectric (optical) smoke sensor\u003c\/li\u003e\n\u003cli\u003ePower source: 220–240V AC, 50–60Hz\u003c\/li\u003e\n\u003cli\u003eBattery back-up: 3V rechargeable lithium battery, 10-year life\u003c\/li\u003e\n\u003cli\u003eOperating current: ≤40mA in alarm\u003c\/li\u003e\n\u003cli\u003eCoverage area: 60m² maximum at 2.4m mounting height\u003c\/li\u003e\n\u003cli\u003eAlarm sound level: 85dB at 3m\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 0°C to 40°C\u003c\/li\u003e\n\u003cli\u003eHumidity: 10% to 90% (non-condensing)\u003c\/li\u003e\n\u003cli\u003eWeight: 162g\u003c\/li\u003e\n\u003cli\u003eScheme rating: D1 (BS 5839-6:2019)\u003c\/li\u003e\n\u003cli\u003eApprovals: BS EN 14604:2005\u003c\/li\u003e\n\u003cli\u003eClass II apparatus\u003c\/li\u003e\n\u003cli\u003eGuarantee: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hispec","offers":[{"title":"Default Title","offer_id":56784875651445,"sku":"HSSA\/PE\/FF10","price":21.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/mainsrfsmoke-1_2_8b633c16-75b3-4c36-822a-5e69d675246f.jpg?v=1771969984"},{"product_id":"hispec-pulse-mains-powered-optical-smoke-alarm-with-10-year-lithium-backup-battery-hssa-op-12","title":"Hispec PULSE Mains Powered Optical Smoke Alarm with 10 Year Lithium Backup Battery (HSSA\/OP\/10)","description":"\u003cp\u003eThe Hispec PULSE HSSA\/OP\/10 is a 230V mains-powered optical smoke alarm with a 10-year rechargeable lithium back-up battery, supplied as a full unit. It can be hard-wire interconnected with up to 20 alarms, and can be made wireless by adding the plug-in Hispec RF PRO module (HSSA\/MOD\/RF-PRO). Its sensor is tested and calibrated during manufacture to reduce false activations.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical smoke sensor, calibrated to reduce false activations\u003c\/li\u003e\n\u003cli\u003e10-year rechargeable lithium back-up battery\u003c\/li\u003e\n\u003cli\u003eHush button to temporarily silence nuisance alarms\u003c\/li\u003e\n\u003cli\u003eLoose neutral monitoring alerts you to a loose neutral connection on the supply\u003c\/li\u003e\n\u003cli\u003eLoud 85dB alarm\u003c\/li\u003e\n\u003cli\u003eTamper-proof design\u003c\/li\u003e\n\u003cli\u003eLow battery warning\u003c\/li\u003e\n\u003cli\u003eCompatible with the HSSA\/MOD\/RF-PRO radio module for wireless interconnection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct code: HSSA\/OP\/10\u003c\/li\u003e\n\u003cli\u003eDetection type: optical smoke\u003c\/li\u003e\n\u003cli\u003ePower source: 220–240V AC, 50Hz\u003c\/li\u003e\n\u003cli\u003eBack-up power: lithium battery with 10-year life; 30 days' back-up without mains\u003c\/li\u003e\n\u003cli\u003ePower consumption: ≤40mA in alarm, ≤10μA standby\u003c\/li\u003e\n\u003cli\u003eCable size: 0.75mm² to 1.5mm²\u003c\/li\u003e\n\u003cli\u003eMaximum interconnected units: 20 hardwired (up to 150m); 20 by RF with the optional module\u003c\/li\u003e\n\u003cli\u003eMaximum RF distance (with module): 80m open area, 30m enclosed area\u003c\/li\u003e\n\u003cli\u003eAlarm sound level: 85dB at 3m\u003c\/li\u003e\n\u003cli\u003eLED indicators: green = mains power; red = battery\/fault status\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 0°C to 40°C\u003c\/li\u003e\n\u003cli\u003eOperating humidity: 5% to 95% (non-condensing)\u003c\/li\u003e\n\u003cli\u003eStorage: -10°C to 50°C, 0–90% RH non-condensing\u003c\/li\u003e\n\u003cli\u003eGrade of alarm: D1\u003c\/li\u003e\n\u003cli\u003eDesigned for installation to BS 5839-6:2019\u003c\/li\u003e\n\u003cli\u003eApprovals: BS EN 14604:2005 (Kitemark testing carried out on the full unit only)\u003c\/li\u003e\n\u003cli\u003eWarranty: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hispec","offers":[{"title":"Default Title","offer_id":56784875946357,"sku":"HSSA\/OP\/10","price":31.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/pulsesmoke-1_931bbef6-189b-4038-845f-80e7b10be645.jpg?v=1771970001"},{"product_id":"lumi-plugin-one-smoke-mains-powered-radio-interlink-recessed-smoke-alarm-with-10-year-backup-battery-ls110whmbwsa-2","title":"Lumi-Plugin One-Smoke Mains Powered Radio-Interlink Recessed Smoke Alarm with 10 Year Backup Battery (LS110WHMBWSA)","description":"\u003cp\u003eThe Lumi-Plugin One-Smoke (LS110WHMBWSA) is a mains-powered, recessed smoke alarm with a sealed 10 year back-up battery and built-in radio interlink. Part of the Lumi-Plugin One-Range, it is designed to be installed on its own, without a Lumi-Plugin downlight, so that smoke alarms can be positioned exactly where they are needed for discreet, complete coverage in homes, apartments and residential developments.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMains powered with a non-replaceable 10 year CR2 back-up battery\u003c\/li\u003e\n\u003cli\u003e868MHz radio interlink: wirelessly connects with other Lumi-Plugin smoke and heat alarms\u003c\/li\u003e\n\u003cli\u003eRecessed, low-profile design: described by Lumi-Plugin as the world's smallest mains-powered alarm of its type\u003c\/li\u003e\n\u003cli\u003eFire-rated ceiling installation: 30\/60\/90 minutes in solid joist ceilings, 30 minutes in metal web and I-joist ceilings\u003c\/li\u003e\n\u003cli\u003eSupplied with a pre-wired junction box for quicker installation\u003c\/li\u003e\n\u003cli\u003eInstalls as a standalone fixture without a Lumi-Plugin downlight\u003c\/li\u003e\n\u003cli\u003eComplies with BS 5839-6 Grade D1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e LS110WHMBWSA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply voltage:\u003c\/strong\u003e 110V AC \/ 230V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack-up battery:\u003c\/strong\u003e Non-replaceable CR2, 10 year\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterlink frequency:\u003c\/strong\u003e 868MHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSounder output:\u003c\/strong\u003e Minimum 85dB at 3m\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -10°C to +70°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e EN 14604:2005 + AC:2008; BS 5839-6 Grade D1; fire rated to EN 1365; CE and UKCA marked\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRelated products:\u003c\/strong\u003e Other Lumi-Plugin radio-interlink alarms it links with: \u003ca href=\"\/products\/lumi-plugin-one-heat-mains-powered-radio-interlink-recessed-heat-alarm-with-10-year-backup-battery-ls110whmbwha-2\"\u003eLumi-Plugin One-Heat Mains Powered Radio-Interlink Recessed Heat Alarm with 10 Year Backup Battery (LS110WHMBWHA)\u003c\/a\u003e, \u003ca href=\"\/products\/lumi-plugin-3000k-ip20-fire-rated-led-downlight-with-radio-interlink-heat-alarm-warm-white-lp110wh3kmbwha-5\"\u003eLumi-Plugin 3000K IP20 Fire Rated LED Downlight with Radio-Interlink Heat Alarm (Warm White) (LP110WH3KMBWHA)\u003c\/a\u003e.\u003c\/p\u003e\n","brand":"Lumi-Plugin","offers":[{"title":"Default Title","offer_id":56784876274037,"sku":"LS110WHMBWSA","price":103.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/onesmoke-1_3a0ec021-d43e-4e0f-8ad2-c3c6d2ecf593.jpg?v=1771970018"},{"product_id":"hispec-pulse-mains-powered-smoke-heat-alarm-with-10-year-lithium-backup-battery-hssa-oh-14","title":"Hispec PULSE Mains Powered Smoke \u0026 Heat Alarm with 10 Year Lithium Backup Battery (HSSA\/OH\/10)","description":"\u003cp\u003eThe Hispec PULSE HSSA\/OH\/10 is a 230V mains-powered smoke and heat multi-sensor alarm with a 10-year rechargeable lithium back-up battery, supplied as a full unit. Combining an optical smoke sensor with fixed 60°C heat detection, it gives two ways of detecting a fire in one alarm. It can be hard-wire interconnected with up to 20 alarms, and can be made wireless by adding the plug-in Hispec RF PRO module (HSSA\/MOD\/RF-PRO). Its sensor is tested throughout manufacture and calibrated for fewer false activations.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical smoke and fixed heat (60°C) detection\u003c\/li\u003e\n\u003cli\u003e10-year rechargeable lithium back-up battery\u003c\/li\u003e\n\u003cli\u003eHush feature to temporarily silence nuisance alarms\u003c\/li\u003e\n\u003cli\u003eLoose neutral monitoring\u003c\/li\u003e\n\u003cli\u003eLoud 85dB alarm\u003c\/li\u003e\n\u003cli\u003eTamper-proof design\u003c\/li\u003e\n\u003cli\u003eTest button and low battery signal\u003c\/li\u003e\n\u003cli\u003eCompatible with the HSSA\/MOD\/RF-PRO radio module for wireless interconnection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct code: HSSA\/OH\/10\u003c\/li\u003e\n\u003cli\u003eDetection type: optical smoke and fixed heat (60°C) detection\u003c\/li\u003e\n\u003cli\u003ePower source: 220–240V AC, 50Hz\u003c\/li\u003e\n\u003cli\u003eBack-up power: lithium battery with 10-year life; 30 days' back-up without mains\u003c\/li\u003e\n\u003cli\u003ePower consumption: ≤40mA in alarm, ≤10µA standby\u003c\/li\u003e\n\u003cli\u003eCable size: 0.75mm² to 1.5mm²\u003c\/li\u003e\n\u003cli\u003eMaximum interconnected units: 20 hardwired (up to 150m); 20 by RF with the optional module\u003c\/li\u003e\n\u003cli\u003eMaximum RF distance (with module): 80m open area, 30m enclosed area\u003c\/li\u003e\n\u003cli\u003eAlarm sound level: 85dB at 3m\u003c\/li\u003e\n\u003cli\u003eLED indicators: green = mains power; red = battery\/fault status\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 0°C to 40°C\u003c\/li\u003e\n\u003cli\u003eOperating humidity: 10% to 90%\u003c\/li\u003e\n\u003cli\u003eStorage: -10°C to 50°C, 0–90% RH non-condensing\u003c\/li\u003e\n\u003cli\u003eHousing: fire-retardant ABS; rear and side (mini-trunking) cable entry\u003c\/li\u003e\n\u003cli\u003eWeight (unboxed): 260g (head 175g)\u003c\/li\u003e\n\u003cli\u003eGrade of alarm: D1\u003c\/li\u003e\n\u003cli\u003eApprovals: BS EN 14604:2005 and BS 5446-2:2003; designed for installation to BS 5839-6:2019\u003c\/li\u003e\n\u003cli\u003eGuarantee: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hispec","offers":[{"title":"Default Title","offer_id":56784884498805,"sku":"HSSA\/OH\/10","price":47.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/pulsesmokeheat-1_d586d4a0-7275-4418-ba3e-b7fcc1f86871.jpg?v=1771970133"},{"product_id":"aico-ei146e-mains-powered-optical-smoke-alarm-with-9v-back-up-battery-4","title":"Aico Ei146e Mains Powered Optical Smoke Alarm with 9v Back-Up Battery","description":"\u003cp\u003eThe Aico Ei146e is a mains powered optical smoke alarm from the Aico 140e Series with a replaceable 9V alkaline back-up battery. Its large optical sensor chamber gives a quick response to slow, smouldering fires, and it is suitable for hallways, landings, living rooms, dining rooms and bedrooms.\u003c\/p\u003e\u003cp\u003eIt can be interconnected with other Aico alarms and accessories by hard wire, or wirelessly by RadioLINK when fitted to an Ei168RC RadioLINK base. The back-up battery will need changing over the alarm's 10-year life.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOptical sensor with a quick response to slow, smouldering fires\u003c\/li\u003e\n\u003cli\u003eAutomatic dust compensation\u003c\/li\u003e\n\u003cli\u003eMains powered with 9V alkaline battery back-up\u003c\/li\u003e\n\u003cli\u003eHard-wired or RadioLINK wireless interconnection with other Aico alarms\u003c\/li\u003e\n\u003cli\u003eSupplied with an easi-fit base for quick installation\u003c\/li\u003e\n\u003cli\u003eGrade D2 and compliant with Scottish legislation\u003c\/li\u003e\n\u003cli\u003eKitemarked to BS EN 14604:2005\u003c\/li\u003e\n\u003cli\u003e5-year guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSensor type: optical\u003c\/li\u003e\n\u003cli\u003eSupply voltage: 230V AC, 50Hz\u003c\/li\u003e\n\u003cli\u003eBattery back-up: 9V alkaline, replaceable\u003c\/li\u003e\n\u003cli\u003ePower consumption: 0.75W\u003c\/li\u003e\n\u003cli\u003eSound level: 85dB(A) at 3m\u003c\/li\u003e\n\u003cli\u003eIndicators: green (power), red (alarm or fault)\u003c\/li\u003e\n\u003cli\u003eButton test: simulates the effect of smoke and checks chamber, electronics and horn\u003c\/li\u003e\n\u003cli\u003eSelf test: smoke chamber tested automatically every 40 seconds\u003c\/li\u003e\n\u003cli\u003eInsect screen: 1.00mm mesh\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -10°C to 40°C\u003c\/li\u003e\n\u003cli\u003eHumidity range: 15% to 95% relative humidity\u003c\/li\u003e\n\u003cli\u003ePlastic material: UL94 V0 flame retardant\u003c\/li\u003e\n\u003cli\u003eDimensions (product): 148mm x 50mm\u003c\/li\u003e\n\u003cli\u003eDimensions (boxed): 155mm x 155mm x 62mm\u003c\/li\u003e\n\u003cli\u003eWeight: 345g (product only), 389g (boxed)\u003c\/li\u003e\n\u003cli\u003eApprovals: BS EN 14604:2005\u003c\/li\u003e\n\u003cli\u003eGuarantee: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aico","offers":[{"title":"Default Title","offer_id":56784897016181,"sku":"Ei146e","price":30.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/ei146e-1_f5b4dd25-e48d-4e92-8cc9-a7cdb99c3b1d.png?v=1771970297"},{"product_id":"fireangel-mains-powered-optical-smoke-alarm-with-push-fit-base-sw1-pf-t-4","title":"FireAngel Mains Powered Optical Smoke Alarm with Push-Fit Base (SW1-PF-T)","description":"\u003cp\u003eThe FireAngel SW1-PF-T is a 230V mains-powered optical smoke alarm with a replaceable 9V battery back-up and FireAngel's push-fit base. The base is wired to the mains at first fix and the alarm simply pushes on at second fix, saving time on site. It is a Grade D2 alarm; optical sensing is recommended by BS 5839-6 for circulation areas such as hallways, landings and living rooms and reduces nuisance alarms near kitchens. Up to 12 SW1-PF-T, HW1-PF-T and CW1-PF-T alarms can be hardwire interlinked, or the RF-BW-T base can be used to interlink alarms wirelessly.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e230V mains powered with 9V battery back-up\u003c\/li\u003e\n\u003cli\u003eOptical sensing technology reduces nuisance alarms\u003c\/li\u003e\n\u003cli\u003eImproved push-fit base for quicker installation; align the arrows for a secure connection\u003c\/li\u003e\n\u003cli\u003eHardwire interlink up to 12 smoke (SW1), heat (HW1) and CO (CW1) units: when one sounds they all sound\u003c\/li\u003e\n\u003cli\u003eWireless interlink option using the RF-BW-T base\u003c\/li\u003e\n\u003cli\u003eLarge central test and silence button\u003c\/li\u003e\n\u003cli\u003eLED indicators for power and fault\/alarm; low battery warning\u003c\/li\u003e\n\u003cli\u003eSafety clip prevents the alarm being fitted without a battery\u003c\/li\u003e\n\u003cli\u003eDust cap supplied to protect the alarm during building work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: SW1-PF-T\u003c\/li\u003e\n\u003cli\u003eSensor type: optical\u003c\/li\u003e\n\u003cli\u003ePower: 230V AC mains with 9V PP3 zinc carbon battery back-up\u003c\/li\u003e\n\u003cli\u003eAlarm sound level: 85dB at 3m\u003c\/li\u003e\n\u003cli\u003eInstallation position: ceiling\u003c\/li\u003e\n\u003cli\u003eDimensions: 126mm diameter x 49mm depth\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 5°C to 38°C\u003c\/li\u003e\n\u003cli\u003eOperating humidity: 10% to 85% RH\u003c\/li\u003e\n\u003cli\u003eMaximum hardwired interlink: 12 units\u003c\/li\u003e\n\u003cli\u003eGrade D2\u003c\/li\u003e\n\u003cli\u003eApprovals: EN 14604:2005+AC:2008\u003c\/li\u003e\n\u003cli\u003eWarranty: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FireAngel","offers":[{"title":"Default Title","offer_id":56784897606005,"sku":"SW1-PF-T","price":17.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/sw1-pf-t-01_857ffed2-f526-4417-84e7-f3e5bd919531.jpg?v=1771970320"},{"product_id":"kidde-kf20ll-mains-powered-optical-smoke-alarm-with-lithium-back-up-battery-4","title":"Kidde KF20LL Mains Powered Optical Smoke Alarm with Lithium Back-Up Battery","description":"\u003cp\u003eThe Kidde Firex KF20LL is a 230V mains-powered optical smoke alarm supplied with a long-life 9V lithium back-up battery. It can be hard-wire interlinked with up to 23 other Kidde Firex mains alarms (optical, ionisation or heat), so that when one unit detects danger every connected alarm sounds. Optical alarms are intended for escape routes and circulation areas where slow, smouldering fires are a risk; Kidde recommends a Firex heat alarm for kitchens. It should be installed by a qualified electrician.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInterlinks with up to 23 Firex hard-wired alarms; all alarms sound when danger is detected\u003c\/li\u003e\n\u003cli\u003eAlarm memory identifies the source unit within an interconnected network\u003c\/li\u003e\n\u003cli\u003eDust compensation and bug screen reduce nuisance alarms\u003c\/li\u003e\n\u003cli\u003eCombined Test\/Hush button for routine testing and temporary silencing of nuisance alarms\u003c\/li\u003e\n\u003cli\u003eAutomatic reset after activation\u003c\/li\u003e\n\u003cli\u003eTamper-resistant locking device prevents removal without a tool\u003c\/li\u003e\n\u003cli\u003eUser-replaceable long-life 9V lithium back-up battery supplied as standard\u003c\/li\u003e\n\u003cli\u003eAutomatic self-test: the unit chirps if a fault is detected\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: KF20LL\u003c\/li\u003e\n\u003cli\u003ePower supply: 230V AC, 50Hz mains with 9V lithium battery back-up\u003c\/li\u003e\n\u003cli\u003eSensor: optical, circular lateral chamber with insect-resistant entry and bug screen mesh\u003c\/li\u003e\n\u003cli\u003eSound output: 85dB(A) minimum at 3m; alarm frequency 3.2kHz typical\u003c\/li\u003e\n\u003cli\u003eAlarm pattern: temporal T3 (three pulses, pause, three pulses)\u003c\/li\u003e\n\u003cli\u003ePower consumption: \u0026lt;15mA\u003c\/li\u003e\n\u003cli\u003eConnection: push-in\/snap-fit connector with 150mm flying leads (supplied)\u003c\/li\u003e\n\u003cli\u003eIndicators: continuous green LED (mains on); red LED for status, alarm and hush (hush auto-resets after 15 minutes)\u003c\/li\u003e\n\u003cli\u003eFixing: mounting bracket with 57mm to 90mm screw spacing for standard back boxes and a 50mm central cable access hole\u003c\/li\u003e\n\u003cli\u003eAlarm dimensions: 127 x 127 x 39mm; bracket 133 x 133 x 6mm\u003c\/li\u003e\n\u003cli\u003eAlarm weight: 242g\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 0°C to +40°C\u003c\/li\u003e\n\u003cli\u003eHumidity: up to 93% RH, non-condensing\u003c\/li\u003e\n\u003cli\u003eStorage and transport: -20°C to +60°C, 5–95% RH non-condensing\u003c\/li\u003e\n\u003cli\u003eApprovals: BSI certified to BS EN 14604:2005\u003c\/li\u003e\n\u003cli\u003eWarranty: 6 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kidde Safety Europe","offers":[{"title":"Default Title","offer_id":56784898294133,"sku":"KF20LL","price":38.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/10955_2nd_85241167-65ef-40f1-9bce-301c5e24e794.jpg?v=1771970358"},{"product_id":"kidde-kf20r-mains-powered-optical-smoke-alarm-with-rechargeable-back-up-battery-4","title":"Kidde KF20R Mains Powered Optical Smoke Alarm with Rechargeable Back-Up Battery","description":"\u003cp\u003eThe Kidde Firex KF20R is a 230V mains-powered optical smoke alarm with a built-in rechargeable lithium back-up battery, so there is no back-up battery to replace during the alarm's life. It can be hard-wire interlinked with up to 23 other Kidde Firex mains alarms (optical, ionisation or heat), so that when one unit detects danger every connected alarm sounds. Optical alarms are recommended for escape routes, hallways, bedrooms and living areas where slow, smouldering fires are a risk; Kidde recommends a Firex heat alarm for kitchens.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInterlinks with up to 23 Firex hard-wired alarms; all alarms sound when danger is detected\u003c\/li\u003e\n\u003cli\u003eAlarm memory identifies the source unit within an interconnected network\u003c\/li\u003e\n\u003cli\u003eOptical sensor with dust compensation and bug screen to reduce nuisance alarms\u003c\/li\u003e\n\u003cli\u003eCombined Test\/Hush button for routine testing and temporary silencing of nuisance alarms\u003c\/li\u003e\n\u003cli\u003eAutomatic reset after activation\u003c\/li\u003e\n\u003cli\u003eTamper-resistant locking device prevents removal without a tool\u003c\/li\u003e\n\u003cli\u003eSealed-in rechargeable lithium back-up battery (not user-replaceable)\u003c\/li\u003e\n\u003cli\u003eAutomatic self-test: the unit chirps if a fault is detected\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: KF20R\u003c\/li\u003e\n\u003cli\u003ePower supply: 230V AC, 50Hz mains with built-in rechargeable lithium battery back-up\u003c\/li\u003e\n\u003cli\u003eSensor: optical, with dust compensation and bug screen\u003c\/li\u003e\n\u003cli\u003eSound output: 85dB(A) minimum at 3m; alarm frequency 3.2kHz typical\u003c\/li\u003e\n\u003cli\u003eAlarm pattern: temporal T3 (three pulses, pause, three pulses)\u003c\/li\u003e\n\u003cli\u003ePower consumption: \u0026lt;15mA\u003c\/li\u003e\n\u003cli\u003eConnection: push-in\/snap-fit connector with 150mm flying leads (supplied)\u003c\/li\u003e\n\u003cli\u003eIndicators: continuous green LED (mains on); red LED for status, alarm and hush (hush auto-resets after 15 minutes)\u003c\/li\u003e\n\u003cli\u003eFixing: mounting bracket with 57mm to 90mm screw spacing for standard back boxes and a 50mm central cable access hole\u003c\/li\u003e\n\u003cli\u003eDimensions: 127 x 127 x 41mm\u003c\/li\u003e\n\u003cli\u003eWeight: 246g (including battery)\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -10°C to +40°C\u003c\/li\u003e\n\u003cli\u003eHumidity: up to 93% RH, non-condensing\u003c\/li\u003e\n\u003cli\u003eStorage and transport: -20°C to +60°C, 5–95% RH non-condensing\u003c\/li\u003e\n\u003cli\u003eApprovals: BSI certified to BS EN 14604:2005\u003c\/li\u003e\n\u003cli\u003eAlarm grade: D1\u003c\/li\u003e\n\u003cli\u003eProduct life: 10 years\u003c\/li\u003e\n\u003cli\u003eWarranty: 6 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kidde Safety Europe","offers":[{"title":"Default Title","offer_id":56784898425205,"sku":"KF20R","price":37.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/10217_2nd_ed13be73-9605-4e15-a458-d7369b20a911.jpg?v=1771970364"},{"product_id":"fireangel-specification-mains-powered-multi-sensor-smoke-alarm-with-lithium-battery-sm-sn-8","title":"FireAngel Specification Mains Powered Multi-Sensor Smoke Alarm with Lithium Battery (SM-SN-1)","description":"\u003ch2\u003eFireAngel Specification Mains Powered Multi-Sensor Smoke Alarm with Lithium Battery (SM-SN-1)\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFireAngel SM-SN-1\u003c\/strong\u003e is a 230V \u003cstrong\u003emains smoke alarm\u003c\/strong\u003e from the Specification range, with Thermoptek multi-sensor detection and a sealed 10-year lithium back-up battery.\u003c\/p\u003e\n\u003cp\u003eThe FireAngel Specification SM-SN-1 is a 230V mains-powered multi-sensor smoke alarm with a sealed 10-year lithium battery back-up. Its patented Thermoptek technology combines optical smoke sensing with thermal enhancement for fast detection of both fast-flaming and slow-smouldering fires. It is Grade D1 as per BS 5839-6:2019 and is Smart RF ready: fit a FS1521W2 Smart RF radio module to wirelessly interlink with up to 50 FireAngel Smart RF products, including the FireAngel Connect Gateway.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThermoptek multi-sensor (optical with thermal enhancement) detection\u003c\/li\u003e\n\u003cli\u003eSealed 10-year lithium battery back-up\u003c\/li\u003e\n\u003cli\u003eSmart RF ready with the FS1521W2 module; compatible with the FireAngel Connected gateway and app\u003c\/li\u003e\n\u003cli\u003eMixed system compatibility: Smart RF and hardwired alarms, and mains and battery alarms, on a single network\u003c\/li\u003e\n\u003cli\u003eLow energy use: typically less than 10% of the average 230V AC smoke alarm\u003c\/li\u003e\n\u003cli\u003eCentralised button for Test \/ Smart Silence \/ Locate\u003c\/li\u003e\n\u003cli\u003eSecondary back-up buzzer\u003c\/li\u003e\n\u003cli\u003eUltra-slim, integrated design for easy installation\u003c\/li\u003e\n\u003cli\u003eSupplied with a dust cap to protect the alarm during building work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel: SM-SN-1\u003c\/li\u003e\n\u003cli\u003eSensor type: Thermoptek multi-sensor optical\u003c\/li\u003e\n\u003cli\u003eSupply voltage: 230V AC, 50Hz\u003c\/li\u003e\n\u003cli\u003eBattery back-up: 10-year sealed-for-life lithium\u003c\/li\u003e\n\u003cli\u003eAlarm sound level: 85dB(A) at 3m minimum\u003c\/li\u003e\n\u003cli\u003eInstallation positions: ceiling or wall\u003c\/li\u003e\n\u003cli\u003eMaximum connected units: 50 Smart RF devices\u003c\/li\u003e\n\u003cli\u003eDimensions: 141.5mm diameter x 43mm depth\u003c\/li\u003e\n\u003cli\u003eWeight: 257g\u003c\/li\u003e\n\u003cli\u003eOperating temperature: +4°C to +38°C\u003c\/li\u003e\n\u003cli\u003eOperating humidity: up to 90% RH, non-condensing\u003c\/li\u003e\n\u003cli\u003eStorage: -20°C to +60°C, up to 93% RH non-condensing\u003c\/li\u003e\n\u003cli\u003eFor use in: hallway, landing, living room, bedroom and dining room\u003c\/li\u003e\n\u003cli\u003eGrade D1 as per BS 5839-6:2019\u003c\/li\u003e\n\u003cli\u003eCertified to EN 14604:2005+AC:2008\u003c\/li\u003e\n\u003cli\u003eWarranty: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUsed for:\u003c\/strong\u003e new-build and rented homes, social housing and HMOs requiring Grade D1 mains-powered smoke alarms. For kitchens, pair it with the \u003ca href=\"\/products\/fireangel-specification-mains-powered-thermistek-heat-alarm-with-lithium-battery-hm-sn-8\"\u003eFireAngel HM-SN-1 heat alarm\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan the SM-SN-1 be interlinked wirelessly?\u003c\/h3\u003e\n\u003cp\u003eYes. It is Smart RF ready: fit a FS1521W2 Smart RF radio module to interlink wirelessly with up to 50 FireAngel Smart RF products.\u003c\/p\u003e\n\u003ch3\u003eWhat grade is it?\u003c\/h3\u003e\n\u003cp\u003eGrade D1 as per BS 5839-6:2019, certified to EN 14604:2005+AC:2008.\u003c\/p\u003e\n\u003ch3\u003eWhere should it be installed?\u003c\/h3\u003e\n\u003cp\u003eIt is designed for hallways, landings, living rooms, bedrooms and dining rooms, on the ceiling or wall.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from JEM UK?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine products from leading fire and security manufacturers\u003c\/li\u003e\n\u003cli\u003eExpert technical advice from our fire and security team\u003c\/li\u003e\n\u003cli\u003eNext-day dispatch on items in stock at our Poole warehouse\u003c\/li\u003e\n\u003cli\u003eTrade-friendly service for installers, maintenance companies and end users\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"FireAngel","offers":[{"title":"Default Title","offer_id":56785078387061,"sku":"SM-SN-1","price":34.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/sm-sn-1-01_338a4117-ada2-4f24-8806-b298e2c685ed.jpg?v=1771974447"},{"product_id":"hispec-rf-pro-mains-powered-radio-interlink-optical-smoke-alarm-with-rechargeable-backup-battery-hssa-pe-rf10-pro-5","title":"Hispec RF PRO Mains Powered Radio-Interlink Optical Smoke Alarm with Rechargeable Backup Battery (HSSA\/PE\/RF10-PRO)","description":"\u003cp\u003eThe Hispec RF PRO HSSA\/PE\/RF10-PRO is a 230V mains-powered optical (photoelectric) smoke alarm with a 10-year rechargeable lithium back-up battery and built-in 868MHz radio interlink. It wirelessly interconnects with other Hispec RF PRO alarms, so every paired alarm sounds when one detects smoke, without the need for interconnect cabling between rooms. It is supplied with a Hispec Fast Fix base for quick installation.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWirelessly interconnects up to 20 Hispec RF PRO detectors\u003c\/li\u003e\n\u003cli\u003eMains powered with 10-year rechargeable lithium battery back-up\u003c\/li\u003e\n\u003cli\u003eFast Fix base included\u003c\/li\u003e\n\u003cli\u003eLoud 85dB alarm\u003c\/li\u003e\n\u003cli\u003eInsect-proof and tamper-proof design\u003c\/li\u003e\n\u003cli\u003eTest function and hush feature\u003c\/li\u003e\n\u003cli\u003eCompatible with the Hispec RF PRO control unit (HSSA\/CU\/RF10-PRO)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct code: HSSA\/PE\/RF10-PRO\u003c\/li\u003e\n\u003cli\u003eDetection type: photoelectric (optical) sensor\u003c\/li\u003e\n\u003cli\u003ePower source: 220–240V AC\u003c\/li\u003e\n\u003cli\u003eBattery back-up: rechargeable lithium battery with 10-year life\u003c\/li\u003e\n\u003cli\u003eOperating current: \u0026lt;40mA\u003c\/li\u003e\n\u003cli\u003eRF range: up to 80m in open areas, 30m indoors\u003c\/li\u003e\n\u003cli\u003eCoverage area: 60m² maximum at 2.4m mounting height\u003c\/li\u003e\n\u003cli\u003eAlarm sound level: 85dB at 3m\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 0°C to 40°C\u003c\/li\u003e\n\u003cli\u003eDimensions: 120 x 120 x 55mm\u003c\/li\u003e\n\u003cli\u003eWeight: 178g\u003c\/li\u003e\n\u003cli\u003eScheme rating: D1\u003c\/li\u003e\n\u003cli\u003eApprovals: BS EN 14604:2005\u003c\/li\u003e\n\u003cli\u003eGuarantee: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hispec","offers":[{"title":"Default Title","offer_id":56785078944117,"sku":"HSSA\/PE\/RF10-PRO","price":40.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/mainsrfsmoke-rf_27cc740b-421d-40d5-8a06-ea51b194c3c4.jpg?v=1771974467"},{"product_id":"hispec-rf-pro-mains-powered-radio-interlink-combined-smoke-heat-alarm-hssa-ph-rf10-pro-5","title":"Hispec RF PRO Mains Powered Radio-Interlink Combined Smoke \u0026 Heat Alarm (HSSA\/PH\/RF10-PRO)","description":"\u003cp\u003eThe Hispec RF PRO HSSA\/PH\/RF10-PRO is a 230V mains-powered multi-sensor alarm that combines an optical smoke chamber with a fixed 60°C heat sensor. It has a 10-year rechargeable lithium back-up battery and built-in 868MHz radio interlink, so it can be wirelessly interconnected with other Hispec RF PRO alarms, as well as hard-wire interconnected. It is supplied with a Fast Fix base and is suitable for open-plan living, kitchen and dining areas when installed on the living\/dining side.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptical smoke and fixed heat sensors in one alarm\u003c\/li\u003e\n\u003cli\u003eWirelessly interconnects with up to 20 Hispec RF PRO detectors\u003c\/li\u003e\n\u003cli\u003eAlso hard-wire interconnectable (up to 20 units over 150m)\u003c\/li\u003e\n\u003cli\u003e10-year rechargeable lithium battery back-up\u003c\/li\u003e\n\u003cli\u003eFast Fix base included\u003c\/li\u003e\n\u003cli\u003eLoud 85dB alarm\u003c\/li\u003e\n\u003cli\u003eTest function and hush feature; insect-proof and tamper-proof\u003c\/li\u003e\n\u003cli\u003eCompatible with the Hispec RF PRO control unit (HSSA\/CU\/RF10-PRO)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProduct code: HSSA\/PH\/RF10-PRO\u003c\/li\u003e\n\u003cli\u003eDetection type: optical smoke and fixed heat thermistor (Class A1), 60°C activation\u003c\/li\u003e\n\u003cli\u003ePower source: 220–240V AC, 50–60Hz\u003c\/li\u003e\n\u003cli\u003eBattery back-up: 3V rechargeable lithium battery, 10-year life\u003c\/li\u003e\n\u003cli\u003ePower consumption: ≤40mA in alarm\u003c\/li\u003e\n\u003cli\u003eRF range: up to 80m in open areas, 30m indoors\u003c\/li\u003e\n\u003cli\u003eMaximum interconnection: 20 units wired or wireless; 150m maximum wired distance\u003c\/li\u003e\n\u003cli\u003eAlarm sound level: 85dB at 3m\u003c\/li\u003e\n\u003cli\u003eOperating temperature: 0°C to 40°C\u003c\/li\u003e\n\u003cli\u003eHumidity: 10% to 90% (non-condensing)\u003c\/li\u003e\n\u003cli\u003eWeight: 158g\u003c\/li\u003e\n\u003cli\u003eScheme rating: D1 (BS 5839-6:2019)\u003c\/li\u003e\n\u003cli\u003eApprovals: BS EN 14604:2005, BS 5446-2:2003\u003c\/li\u003e\n\u003cli\u003eClass II apparatus\u003c\/li\u003e\n\u003cli\u003eGuarantee: 5 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hispec","offers":[{"title":"Default Title","offer_id":56785079140725,"sku":"HSSA\/PH\/RF10-PRO","price":71.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/smokeheatrf10pro-wifi_45567e02-f41c-49cb-b739-c9cbc2e9d0d8.jpg?v=1771974483"},{"product_id":"firehawk-mains-optical-smoke-alarm-with-alkaline-battery-backup-fhn250bb-6","title":"Firehawk Mains Optical Smoke Alarm with Alkaline Battery Backup (FHN250BB)","description":"\u003ch2\u003eFirehawk Mains Optical Smoke Alarm with Alkaline Battery Backup (FHN250BB)\u003c\/h2\u003e\n\n\u003cp\u003eThe Firehawk Mains Optical Smoke Alarm with Alkaline Battery Backup (FHN250BB) is a optical smoke alarm designed for reliable domestic and light commercial fire safety applications. Built by Firehawk, it provides a practical solution for installers, landlords and homeowners looking for dependable alarm protection and straightforward installation.\u003c\/p\u003e\n\n\u003cp\u003eThis mains powered with alkaline battery backup product is suitable for homes, flats, rental properties, corridors, bedrooms, landings and other areas where optical smoke detection is required. Its compact, professional design makes it ideal for replacement projects, new installations and upgrades to existing Firehawk alarm systems.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eOptical smoke alarm for reliable fire detection\u003c\/li\u003e\n\u003cli\u003eDesigned for fast warning in domestic fire safety applications\u003c\/li\u003e\n\u003cli\u003eMains powered design for permanent alarm installations\u003c\/li\u003e\n\u003cli\u003eManufacturer reference: FHN250BB\u003c\/li\u003e\n\u003cli\u003eSuitable for domestic and light commercial use\u003c\/li\u003e\n\u003cli\u003eDesigned for simple installation and everyday reliability\u003c\/li\u003e\n\u003cli\u003eManufactured by Firehawk, a trusted fire safety brand\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\n\u003cp\u003eThe Firehawk Mains Optical Smoke Alarm with Alkaline Battery Backup (FHN250BB) is suitable for homes, flats, rental properties, corridors, bedrooms, landings and other areas where optical smoke detection is required. It is a practical choice for professional installers, landlords, facilities teams and homeowners who require reliable fire or carbon monoxide safety equipment.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from JEM UK?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eCompetitive prices on genuine Firehawk products\u003c\/li\u003e\n\u003cli\u003eExpert advice from experienced fire safety specialists\u003c\/li\u003e\n\u003cli\u003eFast UK dispatch on stocked items\u003c\/li\u003e\n\u003cli\u003eTrusted supplier of professional fire and security equipment\u003c\/li\u003e\n\u003cli\u003eExcellent service for installers, businesses and end users\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FireHawk","offers":[{"title":"Default Title","offer_id":56785079337333,"sku":"FHN250BB","price":18.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/fhn250-1_d7234cad-0a83-4e65-96db-47ea6233b924.jpg?v=1771974496"},{"product_id":"firehawk-mains-optical-smoke-alarm-with-rechargeable-lithium-battery-backup-fhn250rb-7","title":"Firehawk Mains Optical Smoke Alarm with Rechargeable Lithium Battery Backup (FHN250RB)","description":"\u003ch2\u003eFirehawk Mains Optical Smoke Alarm with Rechargeable Lithium Battery Backup (FHN250RB)\u003c\/h2\u003e\n\n\u003cp\u003eThe Firehawk Mains Optical Smoke Alarm with Rechargeable Lithium Battery Backup (FHN250RB) is a optical smoke alarm designed for reliable domestic and light commercial fire safety applications. Built by Firehawk, it provides a practical solution for installers, landlords and homeowners looking for dependable alarm protection and straightforward installation.\u003c\/p\u003e\n\n\u003cp\u003eThis mains powered with rechargeable lithium battery backup product is suitable for homes, flats, rental properties, corridors, bedrooms, landings and other areas where optical smoke detection is required. Its compact, professional design makes it ideal for replacement projects, new installations and upgrades to existing Firehawk alarm systems.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eOptical smoke alarm for reliable fire detection\u003c\/li\u003e\n\u003cli\u003eDesigned for fast warning in domestic fire safety applications\u003c\/li\u003e\n\u003cli\u003eMains powered design for permanent alarm installations\u003c\/li\u003e\n\u003cli\u003eManufacturer reference: FHN250RB\u003c\/li\u003e\n\u003cli\u003eSuitable for domestic and light commercial use\u003c\/li\u003e\n\u003cli\u003eDesigned for simple installation and everyday reliability\u003c\/li\u003e\n\u003cli\u003eManufactured by Firehawk, a trusted fire safety brand\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\n\u003cp\u003eThe Firehawk Mains Optical Smoke Alarm with Rechargeable Lithium Battery Backup (FHN250RB) is suitable for homes, flats, rental properties, corridors, bedrooms, landings and other areas where optical smoke detection is required. It is a practical choice for professional installers, landlords, facilities teams and homeowners who require reliable fire or carbon monoxide safety equipment.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from JEM UK?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eCompetitive prices on genuine Firehawk products\u003c\/li\u003e\n\u003cli\u003eExpert advice from experienced fire safety specialists\u003c\/li\u003e\n\u003cli\u003eFast UK dispatch on stocked items\u003c\/li\u003e\n\u003cli\u003eTrusted supplier of professional fire and security equipment\u003c\/li\u003e\n\u003cli\u003eExcellent service for installers, businesses and end users\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FireHawk","offers":[{"title":"Default Title","offer_id":56785079402869,"sku":"FHN250RB","price":20.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/fhn250-1_1_01f247e1-7817-41e4-9e57-bc4ffdf9bee9.jpg?v=1771974499"},{"product_id":"aico-ei3016-mains-powered-optical-smoke-alarm-with-rechargeable-back-up-battery-5","title":"Aico Ei3016 Mains Powered Optical Smoke Alarm with Rechargeable Back-Up Battery","description":"\u003cp\u003eThe Aico Ei3016 is a mains powered optical smoke alarm from the Aico 3000 Series, with a 10-year rechargeable lithium cell back-up. Its optical sensor is best for detecting slow, smouldering fires, making it suitable for hallways, landings, bedrooms, living rooms and dining rooms.\u003c\/p\u003e\u003cp\u003eThe Ei3016 interconnects with other Aico mains powered alarms by hard wire, and with an Ei3000MRF SmartLINK module it can be wirelessly interconnected. It works in hard-wired, RadioLINK or hybrid Aico systems.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh-performance optical smoke sensor with smoke chamber design and integrated insect screen\u003c\/li\u003e\n\u003cli\u003eAutomatic dust compensation with a self-monitoring mechanism that recalibrates the trigger point as dust builds up\u003c\/li\u003e\n\u003cli\u003eMains powered with a 10-year rechargeable lithium cell back-up\u003c\/li\u003e\n\u003cli\u003eBuilt-in AudioLINK+ data extraction: read activation dates, sensor status and alarm life to a smartphone or tablet via the app\u003c\/li\u003e\n\u003cli\u003eSmartLINK compatible: add an Ei3000MRF module for wireless interconnection, data extraction and real-time notifications\u003c\/li\u003e\n\u003cli\u003eCompatible with other Aico mains powered devices\u003c\/li\u003e\n\u003cli\u003eGrade D1 and compliant with Scottish legislation\u003c\/li\u003e\n\u003cli\u003eSupplied with an easi-fit base\u003c\/li\u003e\n\u003cli\u003e10-year guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSensor type: optical\u003c\/li\u003e\n\u003cli\u003eSupply voltage: 230V AC, 50Hz\u003c\/li\u003e\n\u003cli\u003ePower consumption: 0.25W (standby)\u003c\/li\u003e\n\u003cli\u003eBattery back-up: rechargeable lithium cells\u003c\/li\u003e\n\u003cli\u003eSound level: 85dB(A) at 3m\u003c\/li\u003e\n\u003cli\u003eButton test: checks sensor, electronics and sounder\u003c\/li\u003e\n\u003cli\u003eSilence function: silences alarm for 10 minutes; silences fault beeps for 12 hours\u003c\/li\u003e\n\u003cli\u003eAudioLINK+: enabled\u003c\/li\u003e\n\u003cli\u003eSmartLINK: compatible via the Ei3000MRF module\u003c\/li\u003e\n\u003cli\u003eMemory: records last alarm event\u003c\/li\u003e\n\u003cli\u003eFixing: easi-fit base (supplied)\u003c\/li\u003e\n\u003cli\u003eHumidity range: 15% to 95% relative humidity\u003c\/li\u003e\n\u003cli\u003eIndicator LEDs: green (power), red (alarm, silence mode, memory), yellow (fault event)\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -10°C to 40°C\u003c\/li\u003e\n\u003cli\u003ePlastic material: UL 94 V0 flame retardant\u003c\/li\u003e\n\u003cli\u003eDimensions (product): 150mm x 63mm\u003c\/li\u003e\n\u003cli\u003eDimensions (boxed): 155mm x 155mm x 65mm\u003c\/li\u003e\n\u003cli\u003eWeight: 336g (product only), 383g (boxed)\u003c\/li\u003e\n\u003cli\u003eStandard: BS EN 14604:2005\u003c\/li\u003e\n\u003cli\u003eGuarantee: 10 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aico","offers":[{"title":"Default Title","offer_id":56785080516981,"sku":"Ei3016","price":62.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/8304_2nd_f52f6d3a-36e3-44ae-b0db-7a4ad6d77598.jpg?v=1771974537"},{"product_id":"aico-ei3024-mains-powered-multi-sensor-fire-alarm-with-rechargeable-back-up-battery-7","title":"Aico Ei3024 Mains Powered Multi-Sensor Fire Alarm with Rechargeable Back-Up Battery","description":"\u003cp\u003eThe Aico Ei3024 is a mains powered multi-sensor fire alarm from the Aico 3000 Series. It combines optical and heat sensors that work independently and together, so it responds to both fast flaming and slow smouldering fires with increased resistance to false alarms. This simplifies alarm choice for hallways, landings, bedrooms, living rooms, dining rooms and lofts.\u003c\/p\u003e\u003cp\u003eIt has a 10-year rechargeable lithium cell back-up and interconnects with other Aico mains powered alarms by hard wire, or wirelessly with an Ei3000MRF SmartLINK module. It works in hard-wired, RadioLINK or hybrid Aico systems.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOptical and heat sensors for total fire response\u003c\/li\u003e\n\u003cli\u003eSelf-monitoring dust compensation and mesh insect shield to reduce false alarms\u003c\/li\u003e\n\u003cli\u003eMains powered with a 10-year rechargeable lithium cell back-up\u003c\/li\u003e\n\u003cli\u003eBuilt-in AudioLINK+ data extraction to a smartphone or tablet via the app\u003c\/li\u003e\n\u003cli\u003eSmartLINK compatible: add an Ei3000MRF module for wireless interconnection and real-time notifications\u003c\/li\u003e\n\u003cli\u003eCompatible with other Aico mains powered devices\u003c\/li\u003e\n\u003cli\u003eGrade D1 and compliant with Scottish legislation\u003c\/li\u003e\n\u003cli\u003eSupplied with an easi-fit base\u003c\/li\u003e\n\u003cli\u003e10-year guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSensor types: optical and thermistor\u003c\/li\u003e\n\u003cli\u003eSupply voltage: 230V AC, 50Hz\u003c\/li\u003e\n\u003cli\u003ePower consumption: 0.25W (standby)\u003c\/li\u003e\n\u003cli\u003eBattery back-up: rechargeable lithium cells\u003c\/li\u003e\n\u003cli\u003eSound level: 85dB(A) at 3m\u003c\/li\u003e\n\u003cli\u003eButton test: checks sensors, electronics and sounder\u003c\/li\u003e\n\u003cli\u003eSilence function: silences alarm for 10 minutes; silences fault beeps for 12 hours\u003c\/li\u003e\n\u003cli\u003eAudioLINK+: enabled\u003c\/li\u003e\n\u003cli\u003eSmartLINK: compatible via the Ei3000MRF module\u003c\/li\u003e\n\u003cli\u003eMemory: records last alarm event\u003c\/li\u003e\n\u003cli\u003eFixing: easi-fit base (supplied)\u003c\/li\u003e\n\u003cli\u003eHumidity range: 15% to 95% relative humidity\u003c\/li\u003e\n\u003cli\u003eIndicator LEDs: green (power), red (alarm, silence mode, memory), yellow (fault event)\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -10°C to 40°C\u003c\/li\u003e\n\u003cli\u003ePlastic material: UL 94 V0 flame retardant\u003c\/li\u003e\n\u003cli\u003eDimensions (product): 150mm x 66mm\u003c\/li\u003e\n\u003cli\u003eDimensions (boxed): 155mm x 155mm x 70mm\u003c\/li\u003e\n\u003cli\u003eWeight: 346g (product only), 412g (boxed)\u003c\/li\u003e\n\u003cli\u003eGuarantee: 10 years\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aico","offers":[{"title":"Default Title","offer_id":56785080746357,"sku":"Ei3024","price":81.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/8318_2nd_f0682679-f5d1-43f4-afd3-68e8b3ac17d8.jpg?v=1771974544"},{"product_id":"wisualarm-dhi-hy-sa5ma","title":"Wisualarm DHI-HY-SA5MA D1 Smoke Alarm Mains","description":"\u003ch2\u003eWisualarm DHI-HY-SA5MA 230V Mains Powered Smoke Alarm with 10-Year Rechargeable Lithium Backup Battery\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWisualarm DHI-HY-SA5MA\u003c\/strong\u003e is a 230V \u003cstrong\u003emains powered smoke alarm\u003c\/strong\u003e with a 10-year rechargeable lithium backup battery and split-spectrum photoelectric sensing.\u003c\/p\u003e\n\u003cp\u003e230V Smoke Alarm Mains Power DHI-HY-SA5MA with 10 Year Rechargeable Lithium Back-up Battery is specifically designed to continuously monitor smoke concentration.\u003c\/p\u003e\n\u003cp\u003eAdopting advanced split-spectrum photoelectric chamber and a built-in high-volume buzzer, it responds quickly and becomes highly sensitive with stable performance and low false alarm.\u003c\/p\u003e\n\u003cp\u003eOnce the surrounding smoke concentration reaches the alarm value, it will promptly send out visual and audible alarm signal to remind the user to take immediate measures.\u003c\/p\u003e\n\u003cp\u003eSmoke alarm can be interconnected via a hardwired or wireless system (using optional WisuLink wireless interconnected module). Once one device triggers an alarm, the alarm signal will be pushed to every alarm in the interconnected network and they will raise the alarm in unison.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSplit-spectrum sensor technology\u003c\/li\u003e\n\u003cli\u003eBuilt-in 10-year rechargeable lithium battery back-up\u003c\/li\u003e\n\u003cli\u003eHardwire interconnection up to 24 units\u003c\/li\u003e\n\u003cli\u003eWireless interconnected with maximum of 24 devices, compatible with WisuLink wireless interconnected module\u003c\/li\u003e\n\u003cli\u003eTest and silence features in the central push button\u003c\/li\u003e\n\u003cli\u003eLoud sound output over 85 dB(A) at 3 meters\u003c\/li\u003e\n\u003cli\u003eSilenced by a working infrared remote controller\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUsed for:\u003c\/strong\u003e domestic, rented and HMO properties needing interlinked mains smoke alarms.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eHow many alarms can be interlinked?\u003c\/h3\u003e\n\u003cp\u003eUp to 24 units by hardwire interconnection, or a maximum of 24 devices wirelessly using the optional WisuLink wireless interconnected module.\u003c\/p\u003e\n\u003ch3\u003eHow loud is the alarm?\u003c\/h3\u003e\n\u003cp\u003eSound output is over 85dB(A) at 3 metres.\u003c\/p\u003e\n\u003ch3\u003eDoes it have a backup battery?\u003c\/h3\u003e\n\u003cp\u003eYes, a built-in 10-year rechargeable lithium battery back-up.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from JEM UK?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine products from leading fire and security manufacturers\u003c\/li\u003e\n\u003cli\u003eExpert technical advice from our fire and security team\u003c\/li\u003e\n\u003cli\u003eNext-day dispatch on items in stock at our Poole warehouse\u003c\/li\u003e\n\u003cli\u003eTrade-friendly service for installers, maintenance companies and end users\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Wisualarm","offers":[{"title":"Default Title","offer_id":57220042490229,"sku":"DHI-HY-SA5MA","price":29.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/Image_DHI-HY-SA5MASA5MB_2.png?v=1779462906"},{"product_id":"fireangel-sw10-eut","title":"FireAngel SW10-EUT Optical Smoke Alarm, Mains Powered","description":"\u003cp data-path-to-node=\"1\"\u003eThe \u003cb data-path-to-node=\"1\" data-index-in-node=\"4\"\u003eFireAngel SW10-EUT Smoke Alarm\u003c\/b\u003e offers a straightforward and highly certified solution for residential fire safety.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e\u003cb data-path-to-node=\"2\" data-index-in-node=\"0\"\u003eKey Features \u0026amp; Operation:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"3\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,0,0\"\u003e\u003cb data-path-to-node=\"3,0,0\" data-index-in-node=\"0\"\u003eReliability \u0026amp; Setup:\u003c\/b\u003e Engineered for effortless installation and maintenance, backed by strict independent testing to guarantee long-lasting performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,1,0\"\u003e\u003cb data-path-to-node=\"3,1,0\" data-index-in-node=\"0\"\u003eOptical Sensor Technology:\u003c\/b\u003e Utilizes a visual sensing chamber that quickly identifies the thick, white smoke typical of slow-smoldering fires. \u003ci data-path-to-node=\"3,1,0\" data-index-in-node=\"142\"\u003e(Note: For rapid response across all fire profiles, the FireAngel Thermoptek range is recommended).\u003c\/i\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,2,0\"\u003e\u003cb data-path-to-node=\"3,2,0\" data-index-in-node=\"0\"\u003eUninterrupted Power:\u003c\/b\u003e Operates on the main electrical supply but includes a durable, replaceable backup battery to maintain protection during power outages.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"3,3,0\"\u003e\u003cb data-path-to-node=\"3,3,0\" data-index-in-node=\"0\"\u003eUser-Friendly Controls:\u003c\/b\u003e Features an oversized button designed to be pressed easily from the ground (e.g., using a broom handle) for routine testing. This button also engages the \"Sleep Easy\" mode, which pauses low-battery warning chirps for 8 hours to prevent nighttime disruptions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FireAngel","offers":[{"title":"Default Title","offer_id":57220042588533,"sku":"SW10-EUT","price":18.15,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/6712\/8604\/files\/FireAngelSW10-EUT2.png?v=1792404203"}],"url":"https:\/\/jemsystems.co.uk\/collections\/mains-powered-smoke-alarms.oembed","provider":"JEM Systems UK","version":"1.0","type":"link"}