The hand-held transmitter impresses on hand with its compact and handy design and on the other hand with its simple commissioning and operation. With its four channels, you can teach in and control up to four different Sommer drives. It's a high quality, robust replacement which includes protective sliding key cover. This remote pairs with your for Sommer receiver unit just like the old. Comaptible with:for SOMMER SOMMER 4011 4020 4021 4025 4026 4031 4035. IMPORTANT!!! Not compatible with for Sommer 868 MHz SOMloq2 (Pearl, Pearl Twin, Pearl hand-held transmitters) Not compatible with for SOMMER TX55 868 Note: If your old remote's LED light is green or yellow, it is not compatible. Access to receiver required. Please make sure you got access to your receiver/opener before purchase. Disclaimer:Before buying, please make sure your for SOMMER remote control is 868MHz frequency and the LED light is red. Programming:The remote control is the same function as your old remote.it should programming with old receiver according to your old Manual when you . 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. Colour:Black & Silver Material:Plastic+Metal Package Contents: 1 x Remote control Only 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 +/- 1-3cm.