Aico 10 Year Lithium Battery Heat Alarm Ei603 Stand Alone Alarm | Toolstation
Heat 230-volt Alarm with 9-volt Alkaline battery back-up - Brooks
Multisensor Smoke Heat Detectors - Blazequel
Heat Detectors
AJ Interlinked Heat Alarm & Smoke Alarm Extended Bundle, 10-Year Tamper-Proof Battery - SAFE-TECH - A British Brand Specialising in Home and Safety Protection