Just read a report that changed how I think about glass break sensors

I was looking at a security study from a college in Florida that tested false alarms, and it said over 40% of glass break sensor calls were triggered by things like keys jingling or a dog barking, not actual breaking glass. I found it online while trying to figure out why a client kept getting false trips. Has anyone else seen data like this, and do you adjust your placement because of it?

3 comments

3 Comments

ross.angela1mo ago

Ever wonder if the sensor's own mounting bracket vibrating causes some of those false alarms?

emmafisher1mo ago

Totally thought that was nuts until my own bracket came loose.

hart.ryan5d ago

Not sure I buy that one. If the bracket was loose youd probably get a different kind of error, like a dead zone or constant false alarms, not the occasional one. @emmafisher had a bracket come loose but hers was already failing, that's not proof the bracket itself causes the false alarms. These things are usually from vibrations in the floor or wall, not the tiny bit of play in the mount. Id bet my paycheck the sensor's own bracket is solid enough unless you installed it on a washing machine.