This is a nice little alarm. We do a lot of camping. We have a motor-home and a camper and when we go on extended trips we'll take this along with us and use it in them. We've never had an intrusion, but an ounce of prevention is worth a pound of cure, and these are economically priced.

I have a shop out behind my house that is just didn't feel like running wires and cables to for an alarm system or cameras. No one has ever bothered it, but I do keep a lot of hand tools in there. So I decided to buy two of these and put them in opposing corners of the shop. They work great! How do I know? One night I accidentally left my door ajar and the neighbor's dog wandered in. These things went off as soon as the dog got inside the shop!