USAutomatic 070310 Sentry Exit Sensor Underground Automatic Gate Opener;

The Sentry Exit Sensor for your driveway allows exiting vehicles from your property to open the gate by driving pass the sensor. The exit sensor is a magnetic device that installs below ground beside the drive. A magnetic field is established which when interrupted by a metal object will send a signal to open the gate. The Sentry exit sensor features solar friendly design, Made in the USA. This sensor is supplied with a 80 foot cable and is typically installed inside the property beside the drive to automatically open the gate when a car passes. The 3 wire cable is easily connected to the Sentry control board making installation simple. This type of sensor is not a safety device. 1 year limited warranty covers defects in material and workmanship.