Good After Sale ServiceWe provide a one-year warranty service for the Universal Garage Door Keypad. We are committed to providing timely assistance and resolving any problems within 24 hours. For any reason you're not completely satisfied with the product, you can ask for a replacement or refund.Safe and SecureThe universal garage door keypad features the latest Intellicode technology to reduce radio wave interference. Ensure that a new code is sent each time to prevent intruders.Easy to ProgramThe universal garage door keypad include a detailed user manual help you to get set up in minutes. A Temporary PIN allows temporary access to your garage by repair persons, meter readers, house sitters, etc., while you are out, without compromising your familys private entry code.Universal CompatibilityThe universal garage door keypad compatible with liftmaster, Chamberlain, Craftsman opener has Purple/Yellow/Red/Orange/Green color learn button. Works frequency 315/390MHz. It support technology Security+ code or Security+2.0 code. Replaces 877/878MAX, G940EV-P2, 377/977/877/66LM.Upgraded DesignThe universal garage door keypad controls up to 3 openers; Clamshell design and waterproof material extend the service life; backlit numbers are easy to read even in the dark; the keypad is completely wireless, which is powered by battery (included), you can easily open and close your garage door without using a remote control or key.