Single button transmitter (remote control). Compatible with all Overhead Door 312 frequency garage door openers (before 1996).

Part Numbers: 1091303121, 111663.3121.S, 312mhz, 312 mhz, 109125-0001, 109125.0001, 109125

RECOMMENDATION: Order an extra 12 volt battery for your remote controls. Order part # 24030A, 108395-312-1