This garage door remote is not a universal remote or original, but a replacement.<br> 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).<br> 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.<br> 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.<br> 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.