Defender Ultra Slim Vibration Alarm - 2 Pack

good little gadjet any movement on the door and it sets alarm off. feel safer at night .

Self adhesive to stick to windows

Loud, slimline, easy to turn on and off. However, both can go off randomly, which is a shock of it happens in your bedroom in the middle of the night!! If this keeps happening, I will contact the seller, as my brother had the same.issue and needed replacements. All in all, good value, a helpful security deterrent and they adhere well to windows.

Purchased for front/ back door alarm protection after attempted kicking/ break in whilst asleep at night.Excellent value, quality, noise level, functionality & easy to install, much smaller than I was expecting, which gives the user a wide variety of fixing areas, plus this product is Police approved!

These do not work.

For me they were far too sensitive. They are not adjustable and the slightest touch of a window or door and they went off. Sometimes they just went off in still dry conditions when none was in the room or outside as it was an upstairs window.

very loud,perfect for security

I needed a small independent alarm and these were perfect.