Important note before The onebuttontoclose behavior differs from some original manufacturers. For security and to reduce battery consumption, after opening the garage door the ENTER button can be used to close the door within 15–30 seconds. After that window you must enter a fourdigit code to close the garage door. Key benefits — why you need this keypad Secure keyless access: open and close your garage without a remote or physical key by entering a private 4‑digit code you program into the unit. Energy and securityfocused design: onebuttontoclose reduces battery use and limits automatic closing to a short, secure time window. Control multiple doors with one unit: three channels let you operate up to three separate openers from a single keypad. Compatibility and model details Compatible with LiftMaster, Chamberlain, and Sears Craftsman garage door openers from 1993 to current that use a Purple, Yellow, Red, Orange, or Green learn button. DO NOT work for Craftsman 200.57933 57943 57953 Series 100 CR1150 139.57943 139.57953. Replacement for: 877MAX, G940EVP2, 878MAX, 377LM, 977LM, 877LM, 66LM, CMXZDCG440. Key functions and performance Keyless entry using a userprogrammable private 4‑digit code. Security+ 2.0 rolling code technology: syncs with your opener frequency and helps prevent radio interference and code theft. Threechannel operation: control up to three motor units from one keypad. Wireless installation and programming — no hardwiring required. Weatherprotective cover and large backlit buttons for easy use in low light and outdoor conditions. Allows temporary access codes for visitors, delivery personnel, or service technicians. Typical use scenarios Homeowners: Give family members permanent access while keeping remotes secure; use the onebutton close within the short time window after entry for quick operation. Deliveries and service: Create temporary 4‑digit codes for couriers or service workers that expire after use or after a specified period. Multidoor properties: Manage a twocar garage and a detached door from a single keypad using the three channels. What's included / installation notes Wireless keypad with weather cover and backlit keys. Easy wireless programming; follow the opener manufacturer's learnbutton procedure to pair. Remember the onebuttontoclose timing: ENTER will close within 15–30 seconds after opening; otherwise a fourdigit code is required. Safety and reliability Uses Security+ 2.0 rolling code encryption for improved security. Professionally tested to ensure reliable syncing and operation with compatible openers. If your opener uses a Purple, Yellow, Red, Orange, or Green learn button and is not one of the excluded Craftsman models listed above, this keypad provides secure, convenient, and multidoor control without additional remotes.