The Model 109920 Single Channel, 110V, Gate Receiver is designed for use in gate operator applications. An 11-inch wire whip antenna is included for local reception. The whip antenna connects to the receivers Type-F antenna connector. If the receiver is mounted inside a shielded metal enclosure, such as a gate operator housing, an external Model 106603 Remote Whip Antenna should be used. Features include it operates on 115 VAC power, one channel, whip antenna, 1,024 codes, and has a RF frequency: 300 MHz. Dimensions: 3.625 W x 5.25 H x 1.5 . The Model 109920 is compatible with 300 MHz Multi-Code remotes only. Warranty: 1-year.