Hardwired Vehicle Sensor with 50FT of Wire

Effective and Economical. Dakota Alert's hard wired vehicle sensor lets you know any time a vehicle enters or leaves the driveway. The probe will detect vehicles moving by and send a signal through the line to the control box, which will sound a whistle. The probe and wire can easily be buried in turf with a shovel or a lawn edger.The control box simply plugs into a 110V outlet and has an on/off switch on the top of the box. Energy Star