I hope I never have to find out if it will scare off a burglar.

However, if you want to be informed that someone has opened a window or possibly scare off a burglar this will do the trick at a fraction of the cost.

Easy installation, and the alarm is good enough to deter a burglar should it be triggered.

Purchased 12 of these--yes they are loud and would scare burglars away!

Great b

That would not have bothered me if they worked as they were supposed to work

They have given me such a great sense of security, if even just to let you know there is a potential breech from an intruder to buy you time to act as well as

Couldn’t get them to work as

It works on our sliding doors and another door with a little bit of a gap, as they don’t alarm until they