The Model 109950 1-Channel, 12-24V, Gate Receiver is designed for use in gate operator applications. An 11-inch wire whip antenna is included for local reception. The Model 109950 is a dual frequency receiver. An internal jumper selects either 300 MHz or 310 MHz operating frequency. The 300 MHz frequency is compatible with standard Multi-Code transmitters, the 310 MHz frequency is compatible with the Stanley version Multi-Code transmitters.