How To Program Your Garage Door Operator Remote Control or Outside Keypad Below is information to help you program your Garage Door Operator remote control or outside keypad. If you need additional help, feel free to give a call for assistance or to schedule a service call to program for you. CHAMBERLAIN / LIFTMASTER / SEARS CRAFTSMAN GARAGE DOOR OPENERS Programming 971LM and 973LM, 371LM and 373LM Security Plus Transmitters • Press and release the “smart” button on garage door opener motor unit. The smart indicator light will glow steadily for 30 seconds. The 971LM and 973LM remotes have a corresponding amber or red, square, learn button. The 371LM and 373LM have a corresponding purple, square, learn button.