This garage door remote is a replacement remote, not a universal or original remote. It is compatible only with Liftmaster models starting with "9433" (such as 94330E, 94330EWK, 9433E, 94334E, 94335E), Motorlift models "84330E, 84333E, 84335E, 84335EML", and select other brand models (refer to the compatibility list). It is also compatible with Chamberlain Motorlift garage door openers such as ML500, ML700, LM5580, LM600, MLR500. Please verify compatibility with your opener before purchase. The remote features a sliding cover design to prevent accidental button presses. It operates on a 433.92 MHz rolling code technology and has 4 independent buttons capable of controlling multiple garage doors or gates. This wireless remote is touch-sensitive and offers reliable operation up to 100 meters. Weighing approximately 40 grams, it is lightweight, compact, and easy to carry. Includes a keychain for convenient storage with your keys, helping to prevent loss.