Fangrui Product Details Wide Compatibility: The 877max Universal Garage Door Keypad And 890max Garage Door Opener Remote Are Compatible With For Liftmaster, Chamberlain, And Sears Craftsman Garage Door Openers Manufactured After 1993, And Will Work With The Yellow Learn Button (security+ 2.0), Purple Learn Button (315 Mhz), Red/orange Learn Button (390 Mhz Security+), And Green Learn Button (390 Mhz Billion Code) Garage Door Openers. Security+)and Green Learn Button (390 Mhz Billion Code) Garage Door Openers. Does Not Apply To Craftsman 200.57933, 57943, 57953 Series And 100 Cr1150, 139.57943, 139.57953 Models. Wireless Keyless Secure Entry: With A Secure Keyless Entry System, You Dont Need A Remote Or Key, Just A 4-digit Pin Code To Easily Open And Close Your Garage Door. This Keypad Is An Ideal For Models 877max, G940ev-p2, 878max, 377lm, 977lm, 877lm, 66lm And Cmxzdcg440. Universal Garage Door Remote, Replaces 891lm, 893lm, 890max, 893max, 971lm, 371lm, 81lm, 950cd, 953d, 139.53681, 139.53879, 139.53753, 41a6127-