B&Q - Black + Decker Multi Sensor Smoke Alarm + Heat Sensor. 10 Year Sealed Lithium Battery Included. Enhanced Multi Sensor Smoke Alarm

SMOKE ALARM. ADVANCED MULTI-SENSOR FIRE DETECTION: Equipped with both an optical smoke sensor and a thermistor heat sensor, this BLACK+DECKER multi-sensor alarm provides rapid detection of both slow, smouldering fires and fast-flaming fires — ensuring enhanced safety for your home.