Two button keychain Mini remote 315 MHz Features and Specifications Compatible with operator models:M-4500, M-4700, Q-7500, Q-7700, Q-7900, M-Line, Q-Line Marantec garage door opener 2-button digitalremote control For 315 MHz. Transmitter includes clip, battery. Unique, multi-bit technology. LED control button verification. Can control up to 2 Marantec garage door openers. Model number 65892