The BRK® 690MBX Heat Alarm is mains powered with a 9V alkaline battery back up that will provide power to the unit in the event of a mains failure. It features Class A2 Thermistor sensing technology, making it ideal for use in the kitchen, garage or attic.
This alarm features a test button and will also notify you in the event of a low battery. With LED operating indicators and an alarm source indicator. It can be connected with up to 12 compatible smoke and heat alarms for simultaneous warning.
Comes with a 5 year guarantee. Conforms to BS 5446-2: 2003.