Low profile design. Tamperproof 10 year sealed lithium powercell photoelectric smoke alarm with silence feature. Tamper resistant - Locks alarm to mounting bracket to prevent removal of alarm.
The alarm has gone off in the middle of the night on two occasions what’s causing that?
There might be a few factors that might trigger a false alarm. 1. High humidity in the air can set off smoke alarms. The density of the moisture particles in the air triggers the alarm. The device has no way of distinguishing between light smoke particles and heavy moisture content. 2. If your smoke detector is making little chirping noises instead of a full born alarm, then it may be trying to tell you that its batteries are running low. If one of them is beeping, it is a good idea to change the batteries in all your alarms, so you don’t go through a series of chirping incidents. 3. After some time alarms tend to malfunction and it should be replaced every 10 years.