868 MHz For APERTO SOMMER 4011 4020 4021 4025 4026 TX03-868-2 Garage Door Remote Control Rolling Code Transmitter Compatibility Model SOMMER 4011 SOMMER 4010 SOMMER 4026 TX03-868-2 SOMMER 4020 TX03-868-4 SOMMER 4025 SOMMER 4031 SOMMER 4035 APERTO 4021 APERTO 4025 TX02-868-2 APERTO 4020 TX-03-868-4 Include: 1x Remote Control 1x Battery 1x Keychain 1x English Manual Programming The remote control is the same function as your original remote.it should programming with original receiver according to your original Manual when you get it. 1. Locate the Learn / Code Set button on the motor. This is usually under the lamp cover, or on the back of the motor. 2. Press the Learn / Code Set button once, then let go. A light should illuminate. 3. Press the desired transmitter button once, and the light will go out. 4. Press the remote again the the light will flash on the motor and then go out, signifying the remote has been coded. 5. Test the operation of the remote.