Personal Security Window & Door Alarm Bell | Wireless Sensor Door Window Burglar Alarm | Pack of 10

So quick to install with the sticky back on these. Quality seems good and so far they haven’t failed on opening the windows. They fit easily onto a variety of things as they use the contact break system- so one on each side and if one side is opened it goes off. The noise level is good enough to warn you but not loud enough to blow your ears off.My top tip: Buy your batteries with the product- nothing worse than getting the box and having no batteries!Also they multipurpose- don’t just use them on windows and doors. I have them on kitchen cabinets (especially the biscuit one)! And a variety of craft, chemicals and toiletry cupboards that I don’t want the kids opening.

All work great and very loud

Useless, poor quality, and despite several attempts at fitting they just dont work.

Low quality, needs batteries too

Good cheap security for windows

Does exactly what it says in the description..nice and load alarm and all working..excellent value

Feeble sound. Don’t work with double glazing. Use them as cabitalrams

Product came on time. Unfortunately the alarms didn't work for myself, they need to sit flush to the door/window frame.Returned and refund issue promptly