The DCPT-2500 Wireless Probe Transmitter from Dakota Alert Inc. is a driveway alarm kit used to detect vehicles only. The transmitter operates on four CR123A batteries (included), and it has 50' of direct burial wire connecting the probe to the exterior case. The probe is buried parallel to the driveway, and will detect vehicles passing by within approximately 10-12'. The direct burial cable can be run to a tree or post nearby, where you can place the transmitter box. When a vehicle drives by, the transmitter will send a signal to the compatible DCR-2500 receiver up to ½ a mile away.
The DCPA-2500 transmitter is suitable in locations where there may be deer or other large animals that would cause false signals with a motion detecting system. Also, because the probe is buried underground, it can be used in covert applications. The transmitter is weatherproof and meant for exterior locations.