This garage door remote is not a universal remote or original, but a replacement.It is only compatible with Liftmaster from "9433" (such as 94330E, 94330EWK, 9433E, 94334E, 94335E), Motorlift from "84330E, 84333E, 84335E, 84335EML) and other brands models (see compatibility list below).It is also compatible with Chamberlain Motorlift garage door engines such as ML500, ML700, LM5580, LM600, MLR500. Please make sure this remote control is compatible with your engine.The design of the sliding lid prevents the buttons from being pressed accidentally. It has the characteristics of 433.92 MHz rolling code, 4 buttons that work independently and control multiple garage/door doors.The replacement remote control is wireless and touch-sensitive and can be controlled up to 100 meters away. It only weighs approx. 40 g and is very light, compact and easy to carry. The free key chain can store the remote with your keys, which is easier to store and not easy to lose.