Ghost Controls Wireless Vehicle Sensor - AXWVDetects moving vehicles and automatically triggers gate to open Installs underground next to driveway and operates up to 100 feet from control box Compatible with Ghost Controls remotes and backed by an 18 month warranty The AXWV Wireless Vehicle Sensor from Ghost Controls is designed to detect approaching vehicles and automatically open your gate without manual input. Ideal for driveways, this sensor installs underground 12 to 18 inches deep and