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This is a set of 3 identical entry alarms. Each alarm consists of an enclosed permanent magnet and a siren unit that has a built-in magnet sensor.
It is easy to install and use. Wiring is not required. Simply mount the magnet on the edge of your window or door and the siren unit, next to the magnet, onto the fixed frame. The siren will be activated and sound immediately after the window or door has been opened. This happens due to the sensor unit and magnet being separated. Each siren unit has an on/off switch.
Specifications:
Power Supply:
3 x 1.5V AG13 / LR44 button cells per set (total 9 batteries) (batteries not included)
Sound Pressure: 105dB
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