WOWSEA DOBERMAN SECURITY Ultra-Slim Window Alarm - Loud 100dB Alarm and Vibration Sensors - Modern & Ultra-Thin Design,8-Packs

Super Loud alarm if the window or door is vibrated - cheaper than a house alarm and peace of mind

Compact, does the job, alarm really loud. Very pleased. Thankyou

Have had these on my windows for about 4 months.Pros:- reasonably loud - ear piercingly loud if in the same room, but sound doesn't travel that well - behind a few closed doors sound does decrease quite a bit. Will do the job of scaring people away though I imagine. They can be heard from outside/opposite side of window.- good longevity (so far) - have been on my windows, and have been turned on and off lots of times, for 4/5 months with no need for battery change, and have remained same volume.- good that it beeps at you to tell you that it is on - they don't all do this - means that you can turn it on and be sure that it is working.- on/off switch - useful, especially if it is getting set off too easily/you know something is going to set it off/it has gone off and you want to reset it.- good that alarm turns itself off after 30 secs- good adhesive - had no problems with them falling off, even the one above sink in kitchen.Cons:- very sensitive - both a good and bad thing of course. Sometimes banging something hard when doing washing up sets it off (alarm is right in front of basin though tbf), or when bee or something flies into window. We tend to turn them off when we're in, and turn them on at night and when we're going out.- cant tell if its still working without turning it on/off - eg. they could have made it so LED would flash when on to let you know that it's on (would use battery though tbf). You can always turn it on and off if you want to check anyway.Happy with purchase - good quality, functional, good value. Would recommend.

Very good product doe's the job also added bonus keeps the children away from the window no more fingerprints on the clean window's they don't like the noise very loud.i have recommended to family.

Good, loud, and easy to install, come with battery, and stickers.

So, do I keep opening the rest of the bag of 12? No. I Did the same with all of them, and even switched batteries from working to non-working and same results. I bought these for a reason, and it wasn't to play Reindeer Games. I'll be returning whole bag of 12.

Very easy to fit and operate. Worked well when the panel was banged. The siren should prevent any future attack. Very pleased with the product at the price.

These are loud. I installed in my garage which has four small windows.I set the alarms. I shut the garage which triggered the alarms. The noise was painful. Had to open up and switch off each of them... so yes they are good but not for what i was intending to use them for. They will wake the dead annoy your neighbours and make the intruders/my ears bleed everytime the door is opened or closed. Back to the drawing board. Would strongly recommend