General description The Replacement Remote Control for Garage Door Sommer 4020 TX03 868-4 is designed to provide a reliable and convenient solution for controlling your garage door. With a frequency of 868 MHz and a rolling code feature, this remote control allows you to operate up to four garage doors effortlessly. Its ergonomic design ensures a comfortable grip, while the sliding cover protects it from accidental drops. Technical specifications Frequency: 868.8 MHz (Rolling Code) Buttons: 4 Coding: Radio Compatibility and accessories Compatible with Sommer TX03 868-4, 4020, 4020V000, 4025V000, 4026V000, 4031V000, 4011V000, 4035V002 transmitters Not compatible with Pearl, Pearl Vibe, Pearl Twin, or other models, even with the same frequency Not compatible with 433 MHz Installation Requires access to the receiver for programming Must be programmed with a receiver, motor, or opening Usage Controls up to 4 garage doors Offers a stable connection with a strong signal range Allows for