Key benefits Secure, reliable access to your garage without keys or remotes. The 877MAX keypad lets you open and close your garage with a code, eliminating lostremote hassles and unauthorized entry. Flexible control for households with multiple doors or temporary visitors. One keypad supports up to three garage door openers and offers temporary passwords for service workers, deliveries, or guests. Durable, weatherresistant design that works day and night. A waterproof flip cover and backlit keys make the keypad easy to use and longlasting. Main features Replaces: 878MAX, 376LM, 377LM, 877LM, 977LM. Frequency and learnbutton compatibility: 315 MHz Security+ (Purple Learn Button) 390 MHz Security+ (Red/Orange Learn Button) 390 MHz Billion Code (Green Learn Button) Compatible with LiftMaster garage door openers manufactured since 1993. Security+ 2.0 rolling code technology prevents code grabbing and reduces radio interference. Three channels: control up to three separate motor units from a single keypad. Temporary password capability: issue onetime or limitedtime codes for maintenance personnel, meter readers, house sitters, or delivery access. Onetouch close: close the door quickly with a single button press. Backlit keypad for reliable operation in complete darkness. Waterproof flip cover protects the keypad from weather and extends service life. Smooth ABS construction in gray for durability, comfortable handling, and resistance to visible dirt. Rigorously tested using specialized test equipment to ensure consistent performance. Installation and setup Package includes keypad, installation screws, and clear instructions for doityourself installation. No professional required. Recommended steps: ensure the garage door is fully closed before programming. Move close to the door opener and complete the programming steps promptly to avoid timeout errors. Compatible learnbutton colors and frequencies must match your existing opener to complete pairing. Typical use scenarios Homeowner with multiple doors: Install one 877MAX near the driveway to open any of up to three garage doors with separate channels for each door. Shortterm access for service providers: Give a temporary password to a cleaner, dog walker, or contractor so they can enter while you are away without sharing your permanent code. Nighttime convenience: Use the backlit keypad and onetouch close after late arrivals to secure the garage quickly and safely. What's in the box 877MAX garage door keypad Installation screws Programming and installation instructions Technical and practical notes Designed to match LiftMaster openers from 1993 onward; verify your opener's learnbutton color and frequency for compatibility. Keep the keypad's flip cover closed when not in use to protect the unit from rain, dust, and sunlight. If programming fails, ensure you are close to the opener and repeat the steps immediately to avoid timeout. The 877MAX combines secure rollingcode technology, easy multidoor control, temporarycode flexibility, and weatherresistant hardware for dependable, convenient garage access.