Please note: If your old remote control's LED indicator is green or yellow, it is not compatible. Receiver access required. Make sure you have access to your receiver/door opener when purchasing.The handheld transmitter convinces on the one hand with its compact and handy design and on the other hand with its simple commissioning and operation.With four channels, you can teach in and control up to four different Sommer training sessions. This is a high-quality, robust replacement that includes a protective sliding key cover.This remote control pairs with your Sommer receiver, just like the old one.: for SOMMER 4020 TX03-868-4. for SOMMER 4026 TX03-868-2. for APERTO 4021for APERTO 4025for SOMMER 4011for SOMMER 4025for SOMMER 4031for SOMMER 4035for SOMMER 4025 BLUEfor SOMMER 4026 TX03-868-2for SOMMER 4020 TX03-868-44011V0004020V0004025V0004026V0004031V000< br/>4035V002IMPORTANT!!!Not compatible with Sommer 868 MHz SOMloq2 (Pearl, Pearl Twin, Pearl hand transmitter)Not compatible with for SOMMER TX55 868Warning: To purchase, please make sure your remote control for SOMMER is on 868 MHz frequency and the LED light is red.Programming: The remote control has the same function as your old remote control. must be programmed with the old receiver according to your old manual when you receive it.1. Locate the Learn/Code Set button on the motor. It is usually under the lamp cover or on the back of the motor.2. Press the Learn/Code Set button once and then release. A light should illuminate.3. Press the desired transmitter button once and the light will go out.4. Press the remote control again, the light will flash on the motor and then go out, which means the remote control has been coded.5. Test the remote control's function.Color: Black and silverMaterial: Plastic+MetalPackage Contents:1 x Remote ControlOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.