Driveway Alarm Kit
Essy to install, wireless driveway alarm kit for monitoring one driveway/entranceway. Up to 16 transmitters may be connected to one receiver. The transmitter will detect a person or vehicle up to 30m away and transmit the signal up to 1.6km away to the indoor receiver, which sounds an alarm and LED lights.
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FULL KIT- all you need is a 9v battery