Mains 230/240V AC Ionisation Smoke Alarm with 9V alkaline battery back up (included). Can be interconnected by hard wiring (cable) or used with Aico radio wireless bases. Built in Test / Hush button.
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New 9V Rechargeable Li-ion Battery 9800mAh Long Lasting with Cable for Smoke Detector, Alarms, Microphone battery pack
Aliexpress UK
Resistant to nuisance alarms. Sounds a loud 85 dB alarm. Alarm sound pressure: 85db/1m. Alarm current: ≤ 160mA. Product life span: 10 year. Battery life: 2 x 1.5 V AA (replaceable battery Included) replaceable battery Included.
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Upgraded 9Volt Batteries for Smoke Detector/Alarms | Long Lasting Power 9800mAh Li-ion Recharge up to 2000x Times Pre-Charged
Aliexpress UK
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4PCS 16340 3.7V 700mAh Rechargeable Lithium Battery with Connector Wires CR123A For Camera Smoke alarm Monitor Flashlight Toy
Aliexpress UK
Ionisation Sensor: Provides early warning of fast flaming fires that may spread rapidly and burn without providing big smoke. Easy Press test & Silence: Large central button makes weekly testing easy and it will silence nuisance Alarms.
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9V Rechargeable Li-ion Battery 16800mAh USB-C Charging, Compatible with Smoke Alarms Remote Control, UN38.3 CE Certified
Aliexpress UK
The units run out J ul 2032.
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1-10PCS Panasonic 9V 6F22 Alkaline Batteries-Mercury Free,Long Life for Alarm Wireless Microphone,Smoke Detector
Aliexpress UK
The units run out2031.
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EVE CR17335 3V Non-Rechargeable Lithium Battery For PLC CNC Machine Tool Servo Robot Controller GPS Locator Smoke Fire Alarm
Aliexpress UK
UK Electric Fence Energiser 12V 230V Corded 2J Output 10KM Range Fencing Kit. Electric Fence Energiser 12V 1.5-2J 12km 7.5 Miles Range LCD Display AC Battery. Sounds a loud 85 dB alarm. Alarm sound pressure: 85db/1m.
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Rechargeable 9V Battery USB-C Charge,21800mWh Long-lasting 9V Li-Ion Battery with Free Cable,for Smoke Alarm,Camera,Clocks,Audio
Aliexpress UK
Product life span: 10 year. Battery life: 2 x 1.5 V AA (replaceable battery Included) replaceable battery Included. Sounds a loud 85 dB alarm. Optical smoke sensing technology detects slow smouldering fire.
eBay
EVE CR17450 3V primary battery is used for smoke alarms, water meters, PLC servo drivers
Aliexpress UK