Linear 2-Gate/Door Wireless Access Controller: * Multi-purpose wireless access controller for gate or door * 3 relays: access, obstacle and access/obstacle configurable * Relays programmable from 1120 seconds * Super-heterodyne receiver for better range and sensitivity * Up to 500" radio range * Supports 480 block coded transmitters and 238 codes * Supports 6 supervised MGT safety edge transmitters * Keypad programming * Operating freq: 318 MHz * 2-year warranty