This EstAlert smoke alarm signals the presence of smoke in the room with a strong sound signal. The optical sensor, also called photoelectric sensor, is designed to detect typical household fires, such as smouldering fires on soft furnishings and carpets. The compact design of this alarm also allows for discrete fitting. 

The smoke alarm has a large test button, as well as a mute function that silences the smoke alarm for ten minutes. If it turns out that it was a false alarm and there really isn't a fire, the smoke alarm will automatically return to normal mode after 10 minutes. If there is still smoke in the room, the  will sound the alarm again. When the smoke is eliminated, the device remains in the standby position.

The smoke alarm works with a replaceable battery 1 x 9V (included).