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How Heat Alarms Work

A heat alarm is designed to detect heat instead of smoke, the alarm contains a thermistor which is set to respond to temperatures above 58°C.

Step 1 - Heat Enters the Sensor Chamber

When a fire breaks out hot air from the fire will rise and enter the sensor chamber.

Step 2 - The Alarm Sounds

When temperature inside the chamber reaches 58°C a signal is sent to the integrated circuit which causes the alarm to sound alerting the occupants to the fire.

Where Heat Alarms can be Situated

Heat alarms can be situated in the kitchen and the garage, because heat alarms don't react to smoke they are not prone to false alarms from cooking and exhaust fumes.


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