1.877MAX Garage Door Opener Keypad — Compatible with LiftMaster / Chamberlain / Craftsman (since 1993) Key benefits Secure: Uses Security+ 2.0 rollingcode technology so the code changes with every use to reduce the risk of code theft. Durable: Molded ABS plastic housing resists impact and weather; flipup cover protects the keypad when not in use. Easy replacement: Designed to a range of factory keypads and models without replacing the opener. Wide compatibility: Works with LiftMaster/Chamberlain/Craftsman openers that use Yellow, Purple, Green, or Red/Orange Learn Buttons introduced since 1993. Important: NOT compatible with openers that use DIP switches. Main features Function: External wireless keypad for remote access to your garage; programs with the opener's Learn Button. Security: Security+ 2.0 rolling code encryption for onetime changing codes on each use. Material: ABS plastic construction for long life and reliable protection. Protection: Flipup cover prevents accidental presses and protects buttons from weather and dirt. Compatible replacement models : 891LM, 893LM, 893MAX, 971LM, 973LM, 81LM, 371LM, 373LM, 877MAX, G940EVP2, CMXZDCG440, 878MAX, 376LM, 377LM, 877LM, 977LM Compatibility by opener Learn Button color (LiftMaster / Chamberlain / Craftsman) Yellow Learn Button: 8010, 8065, 8075, 8155, 8160, 8165, 8355, 8360, 8365, 8500, 8550, 8557, 8587, 84501, 84602, 85503, 87504, 87802 Purple Learn Button: 1345, 1346, 1355, 1356, 3110, 3130, 3220, 3240, 3245, 3255, 3265, 3275, 3280, 3500, 3575, 3585, 3595, 3800, 3840, 3850, ATS2113X, HCT501130, LGO50113R, LGO20113XR Red / Orange Learn Button: 985, 1000SDR, 1240R, 1245R, 1246R, 1255R, 1256R, 1265, 1280R, 2000SDR, 2110, 2220, 2245, 2255, 2265, 2575, 2580, 2589, AST211R, AST211X Green Learn Button: 1240, 1245, 1245L, 1246, 1250, 1255, 1256, 1260, 1260LK, 1270, 1280, 1000SD, 2000SD, 215WD, 220WD, 315WD, 320WD, AST211 Practical use scenarios Homeowner replacement: Swap a damaged or missing factory keypad on a compatible LiftMaster/Chamberlain/Craftsman opener without replacing the opener unit. Delivery and guest access: Install as an exterior keypad to give temporary access codes to couriers, contractors, or visitors while maintaining rollingcode security. Property manager or multiunit application: Standardize external keypad replacements across multiple units that use Learn Button systems (Yellow, Purple, Green, Red/Orange) for faster maintenance. What to check before Confirm your opener has a Yellow, Purple, Green, or Red/Orange Learn Button (models listed above) and was manufactured from 1993 onward. Do not for openers that use DIP switches—this keypad is not compatible with DIPswitch systems. This keypad provides a direct, secure, and durable replacement for compatible LiftMaster, Chamberlain, and Craftsman garage door openers that use the listed Learn Button colors and models.