Radio broken glass detector

Protecting shop windows, and non-opening windows in a room that is normally closed, is detected by this radio broken glass detector. Physical vibrations activate this detector which is connected to a radio transmission contact. If a very strong vibration presence is felt, even with the alarm OFF, this radio accessory will automatically turn the alarm and its siren ON. The radio broken glass detector is powered by a long life battery and has an automatic signalized system if the battery is becoming weak.