Only compatible with the following blue 868 MHz handheld transmitters: HSE4-868-BS, HSE2-868-BS, HS4-868-BS, HS5-868-BS, HS1-868-BS, HSD1-868-BS, HSD2-868-BS. Compatible with Hörmann SupraMatic, ProMatic, ProMatic Battery RollMatic, RotaMatic, VersaMatic and LineaMatic garage door openers. This is a replacement for your garage door opener; it is not the original. SPECIAL NOTE: Do not buy if your original is not on the list, even if it is 868 MHz. Quick 30-second pairing: quick and secure face-to-face copying of your original transmitter. If code copying fails, you can erase the code and simultaneously press both buttons on the new remote until the LED flashes rapidly. A warning: this garage door opener is more of a replacement than an original accessory. We recommend checking the compatibility list below before purchasing. This mini BS 4-button handheld transmitter has a protective metal cover to prevent accidental button presses. It is small enough to fit on a keychain, bag, or backpack, making it easy to carry.