【Compatibility】The garage door keypad 877max is compatible with all liftmaster garage door openers manufactured since January 1993, including Security + 2.0 with yellow learn button, 315 MHz Security + with purple learn button, 390 Security + with red learn button, and 390 MHz Billion Code with green learn button. Replaces liftmaster keypad 877max 878max 376lm 377lm 977lm..【Complete set】The garage door opener keypad comes with instruction, mounting screws, and 9v-battery. For How to works for lift masters garage door opener keypad: Ensure your liftmaster garage door opener is closed, then start to program the keypad. Get close to your lift master garage door opener and do the program steps quickly, or the program maybe failed as time’s out. Perfect as a replacement for liftmaster garage door keypads..【Exquisite Details】 High quality material for a long-lasting lifetime. Weatherproof flip-up protective cover, and backlit numbers are easy to read even in the dark. Good replacement for your liftmaster garage door opener keypad..【Completely Wireless】 Completely wireless design which is powered by battery (included). As a replacement for liftmaster wireless keypad, convenient for opening or closing your garage door opener easily, which not need to use a remote control or key. Convenient to use as replacement for 877max liftmaster keyless entry keypad. Affordable & Reliable as a replacement for your liftmaster 877max keypad & liftmaster garage door opener remote..【Good After-sale Service】We provide good after-sale service to our customers, for any reasons you are not satisfied, you can request a full refund or a free replacement. Note:The part is totally spare parts (non-original) and the brand names mentioned above and any associated model names are only used to demonstrate compatibility.