The DoorProtect detector detects the door or window being open using British-made hi-end reed switches on which the magnetic field acts. It can be mounted on all types of doors, including a metal base.
The small device GlassProtect detects broken glass using an electret microphone, which registers the sound of impact against the glass and of the glass falling. It is installed at a distance of 9 m from the window. It ignores false alarms caused by thunder, dogs barking and outside noises. Read more