Mains powered with 1 x 9V backup battery. Thermistor heat sensor - detects the increase in temperature rather than smoke. Provides advanced class A2 detection to protect the most dangerous room in the home. Push2Fit base included - save time and money on installations. Positioning: Kitchen |Boiler Room | Laundry Room | Loft | Garage BS EN 14604: 2005 certified. For grade D installations (as per BS5839-6: 2013) Sounds a loud 85dB alarm (3 meters) and includes low battery warning feature

_Easy to install with a Push-Fit base included
_Thermistor heat sensor - designed to detect rate of increase in temperature
_Interconnect up to 50 alarms with the RF Interlink Base RF-BW-T or hardwire interconnect up to 12 SW1, HW1 or CW1 alarms.
_Test/Silence button feature
_5 Year Warranty