Amazon.com : Dakota Alert MURS Alert Transmitter - Long Range Battery Operated Passive Infrared Motion Sensor for Perimeter & Gate Alarm, Weatherproof, Easy-to-Use Wireless Driveway Alarm : Security And Surveillance Products :
DCMA-4000 – Dakota Alert
Dual 4000 – Dakota Alert
Amazon.com : Dakota Alert Wireless Receiver- RE-4k Plus- Up to 1 Mile Operating Range - Compatible with All Dakota Alert 4000 Series Sensors: SBB-4000, DCHT-4000, DCMT-4000, DCPT-4000, and UT-4000 Transmitters : Electronics