WER Doberman Security Slim Loud 100dB Alarm and Vibration Sensors-Modern & Ultra-Thin Design Compatible with Home, Office, Dorm Room or Even RVs (12-Pack)

I've had 4 of these installed for about 2 years after a few burglaries in the area. Very easy to fit, just peel off a protective film to reveal a self adhesive surface thats visible from the outside which is a great deterrent in its own right. They work really well even if someone taps on the window they will go off and definitely loud enough. Clearly if someone smashed a window and fumbled around in the broken glass they could just switch it off but would definitely test a burglars nerve. Batteries seem to last over a year and easy to replace. We've had the odd false alarm in windy conditions when twigs have hit the window but not a regular occurrence. Recommended as a good value, easy to fit security upgrade.

I really like these alarms. Nice and simple and loud enough for my needs.

Really good product. I heard someone trying to tamper with the shed as I was awake. I put the kitchen light on and they ran off. I now have one of these located on the shed door behind the Grandad’s Shed plaque. We just switch it on when it gets dark. The next day the tampering guy came back and got the shock of his life! It’s incredibly loud! It alerted all the neighbours by the time I got to it to turn it off 😂. A couple of neighbours have since purchased them too as well as both of my Daughters.

These alarms are quite loud. The slim design takes up little space on your windows. It's quite sensitive - the alarm comes on by just opening the windows or when you have the windows open and it just so happens to be quite windy which can be a bit annoying. It's very easy to install - just peel off the sticker and stick it onto the window pane. There's a warning sign to warn off potential intruders - hopefully that's enough to do the job of scaring them away. However, if your window builds up a lot of condensation in the winter, then these alarms will eventually get damaged by the moisture so I would not advise on buying these if your windows gets a lot of condensation.

They're excellent. Just wish they wouldn't go off every single time I try to turn them off. They are incredibly sensitive so if they're on and you touch them they'll go off. There should be a difference between someone trying to break my window and me gently touching the switch to turn them off.

Used as alarms for windows & doors.

On a door and it is very noisy.

These are great. Very loud alarm. I like the fact that when stuck to a window, from outside any potential intruder sees the warning sticker. That is enough to put some burglars off. Very well made. Not sure how long the batteries last as at time of posting review, I've only had the alarms for four weeks.

Demasiado sensible

It is very sensitive to shocks and has very loud sound.

Très bonne alarme . Bon produit.Merci 😃

Alles Top. Funktioniert gut!

Ne avevo uno già. Dopo che mi sono entrati i ladri in casa lu ho messi anche a tutte le finestre. Ottimo deterrente