The latest SOMMER 868.35 MHz Garage Door Remote Control Replacement 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 Description: Item condition - New Third party remote control. Not made by SOMMER Decoder IC - Rolling Code. Frequency - 868.35MHz. Modulation - FSK Operating voltage - CR2032 (Free battery included) Transmit distance - 25-50m in open space. Open space means no any interference. No walls, no doors, no trees or any other obstructions. Interference like garage door or brick wall can reduce remote control range significantly. Included Remote Control Battery Keychain English Manual Programming Program to Gate / Garage Door Openers the same way as original SOMMER remotes, please refer to your receiver's user manual. For a typical SOMMER Radio Receiver FM 868.8MHz, the programming procedure is as follows: 1. Press the LEARNING button on the radio receiver or on the control panel, once for channel one, LED 1 lights up, twice for channel two, LED 2 lights up. 2. Make a transmission by pressing one of the desired CH buttons of the transmitter (within the range of the radio receiver). LED flashes and then extinguishes according to which channel has been selected. 3. Repeat process described under points 1 + 2 to teach further manual remote controls on to given radio receiver. Max. 112 memory slots are available. 4. Press the transmitter button to test operation. Note: To remove a single transmitter's code or all transmitter codes from the receiver memory please refer to your receiver manual.