Heat Alarm is designed for Domestic Usage such us a house, villa and apartment,etc, Built with High quality components and advanced technology, the alarm has an excellently stable performance and low power consumption, A 9v Battery will operate up to one year. It can be easily installed, no commission required. Self contained Fixed Temperature 60°C Heat Detector and alarm sounder 80dB, Detection area 30m2. Utilize internal buzzer to provide a loud local alarm. By using the output terminal the alarm can be linked to other alarm in a common alarm network (Up to 30 alarms) or can be interface to other systems.