Dakota Alert DCMA-2500 Driveway Motion Alert 2500' Kit (Green White)
The DCMA-2500 is a feature filled wireless motion detector/receiver kit with a 1/2 mile radio range. The motion detecting sensor operates on one 9-volt battery (not included0 and will detect a person or vehicle passing by out to about 50 ft. The sensor will then send a signal back to the receiver up to 1/2 mile away (actual range will vary depending on the local terrain).