We have other listing for different voltages. Prevention - Detects moving vehicles in an industrial environment where there are blind areas along the driving path and actuates warning lights. Energy Conservation - Detects moving vehicles along a driving path in a warehouse and turns lights on only in the proximity of the vehicle. Security - Detects approaching vehicles or an unauthorized movement of a parked vehicle and actuates alarms, video cameras or vehicle annunciator. Access Control - "Free Exit" vehicle detector for gates, overhead doors and parking barriers. NOTE: Do not use the CarSense sensor for presence detection application. If presence detection is require use our LD-2000 loop detectors or IRB-4X infrared sensors. The CarSense 101 motion detector is pictured here with a sensing probe. Each item sold separately. To complete the CarSense 101 package, you must also purchase a Sensor probe. Probes are sold in lengths of 50 ft., 100 ft., 150 ft., 200 ft. THIS SALE is Carsense 101 Complete Set for 50ft 9...41VDC (12Volt / 24Volt) .