Guard against accidents and fires in the home with the electricals compact Interconnected Heat Alarm. Designed to detect abnormal heat in the home, the alarm has an internal battery with a 10-year life, and connects wirelessly to other heat alarms CO2 alarms and the smoke alarm, meaning all connected alarms around the house will sound if heat is detected. The alarm comes with everything you need to attach it to the ceiling, and is simple to set up. It has a low battery indicator, and a test button, and the LED will flash along with the alarm