This alarm is a smoke detector of the photo cell principle. This means that the alarm checks the air for smoke resulting from fire. It does not detect heat, gas or fire.
If the smoke detector is properly mounted and maintained it will sound an alarm in an early stage.
In the event of a fire this can give you those extra seconds needed to vacate your home and call the fire brigade. The alarm is designed to detect smoke. It cannot prevent a fire.
Read the instructions through carefully before using the smoke detector.
Made in UK