[Compatibility] The 877MAX garage door remote replaces 377LM 878MAX 376LM 977LM 877LM keypad, compatible with all Liftmaster garage goor openers manufactured Since January 1993, suitable for Security + 2.0 of yellow learn button, 390 MHz Billion Code of green learn button, 390 MHz Security + of red or Orange learn button and 315 MHz Security + of purple learn button..[Upgraded wireless remote control] The garage door remote has stronger signal coverage and transmission capacity, fully supports wireless remote control, and you can easily open and close the garage door from a distance without using a key, which is a thoughtful tool worth having..[Elaborate design] You can easily view the numbers in the dark with the help of backlit keyboard; the weather proof protective cover perfectly protects your remote control; use the Security + 2.0 and Security + rolling code technology to make your garage password more secure..[Easy to program] You can easily complete the settings in a few minutes without professional. The kit includes remote, mounting screws, 9V battery and detailed setting instructions. Note: Please program near the garage door; Before starting remote programming, make sure that the garage door opener is completely off, or programming may fail..[Good After-sales service] We provide 1 year warranty for our product. If you have any questions, we will provide professional customer service within 24 hours. Even provide a free replacement or a full refund to you. We'll do our best to get your satisfaction. NOTE: We don't claim these are original product, but it will fit and work like the original.