Smartwares SC08/2 glasbreukalarm/trilalarm voor ramen en deuren, verpakking van 2, wit

Funktioniert nicht kann man auspacken und in die tonne werfen geld ausm dem Fenster geschmissen

Bien, mais un peu cher, on en trouve moins cher et de même qualité.

Sono poco sensibili

Honestly, bought a couple and all work the same way which rule out any defective!! Basically it isn't sensitive enough, if you knock on the device itself it will certainly set up the alarm however, if you knock on the window well.. absolutely nothing will happen!! As it happened even i banged on my window still it didn't trigger it to set the alarm off!! A waste to be honest!!

This is a great little gadget. It will set off if you close your window hard, so it will definitely set off if someone breaks the glass!