Driveway Defender 4000 wireless motion detector/receiver kit with up to a 1 mile* radio range. The passive infrared sensor operates on one 9-volt battery (not included). It will detect a person or vehicle from over 50 feet away and send a signal back to the receiver within 1 mile, support up to 16 transmitters, receiver will play one of 16 different tunes so that different zones can be distinguished. It also features two form C relays and a 12v output. The receiver is powered by a 12VDC transformer.

ALR-DA-DCMA-4KPLUS