The MMP alarm has a very high decibel level (85-120). The decibel level will vary with the life of the battery. To ensure safe operations, we recommend changing the alkaline 9V battery every six months.The alarm has a low battery chirp to warn when the battery is low. When you hear the chirp, change the battery as soon as possible.
The alarm has the option to be activitated in 4 different settings:
There is an external alarm relay connection on the outside of the alarm case for easy connection to an external building security system.