FireAngel 10 year sealed for life battery heat alarm featuring Thermistor heat sensing technology to ensure you?re alerted to fires without the false reactions to cooking fumes. When almost 50% of fires start in the kitchen, it?s paramount you protect this room and are alerted at the first signs of danger. FireAngel heat alarms have been specifically designed for areas with fumes and high humidity such as kitchens, where cooking fumes are present, and attics or garages where there is lots of dust. Features: 10 year kitchen heat alarm - also suitable for garages and lofts 10 year battery included Less fuss, no need to change the batteries Responds to a build up of heat from fire Large central test and silence button Sleep Easy - silence the low battery chirp for 8 hours Easy Installation - fixings supplied Quiet test function supports discreet testing at a lower volume when compared to standard alarms Specifications: Dimensions: H:11.8 x W:11.8 x D:4.2 cm Colour: White Guarantee:5 years