Most helpful critical review
49 of 56 people found the following review helpful
Works as advertised, BUT ...
on October 17, 2013
If you bang hard on the window, it goes off -- so no doubt it would alarm if glass was broken. The siren itself is fairly loud as well, however, likely not loud enough to get a neighbor to call the police unless they were very close to the unit (say, within 50 feet). Would it scare off a burglar? Probably not. Although it does have a red label on the opposite side, which can be seen through the glass. This could possibly be a deterrent, but probably not. It's hard to get into the (stupid) criminal mind, but personally I would just break the window, grab the alarm and switch it off -- which is quite easy to do.
Bottom line: it's not a home security system, but it's better than nothing. An inexpensive way to have SOME security and peace of mind.