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. 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 for 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. Fitment: for SOMMER 4020 TX03-868-4 for SOMMER 4026 TX03-868-2 for APERTO 4021 for APERTO 4025 for SOMMER 4011 for SOMMER 4025 for SOMMER 4031 for SOMMER 4035 for SOMMER 4025 BLUE for SOMMER 4026 TX03-868-2 for SOMMER 4020 TX03-868-4 4011V000 4020V000 4025V000 4026V000 4031V000 4035V002 IMPORTANT!!! Not compatible with for Sommer 868 MHz SOMloq2 (Pearl, Pearl Twin, Pearl hand-held transmitters) Not compatible with for