Universal Compatibility: Replacement for liftmaster Garage Door Opener Keypad, Compatible with LiftMaster/Chamberlain/Craftsman garage door openers manufactured from 2011 to current, Specially designed for the yellow learn button, making the setting operation more simple and clear..Absolute Security: Garage Door Keypad 877lm features the latest Security+2.0 rolling code technology to reduce radio wave interference. Security+2.0 and Security+ rolling code technology ensure that a new code is sent each time to prevent intruders..Easy to Program: 877lm keypad come with A detailed user manual, it can help you get set up in minutes. TIPS: Make sure your garage door opener is fully closed before starting remote programming, do the program steps quickly, or the program may fail as time goes out..Upgraded Design: Complete wireless design makes installation simple, avoiding the trouble of drilling and wiring in the wall. Clamshell design and waterproof and corrosion resistant material for long service life. Backlit numbers are easy to read even in the dark. And you can easily open and close your garage door without using a remote control, helping you solve the problem of forgetting your remote control..High-quality After-sales Service: Our products provide a one-year warranty service, no matter for any reason you are not satisfied, please write to us, we will provide you with timely service. Note: Accessories are compatible spares (non-original), the above brand names and any related model names are only used to demonstrate compatibility.