This LiftMaster 387LM is directly compatible with the Sears Craftsman 139.53776 wireless keypad.  This unit will work on openers made between 1984 and 1997, these units will eithe have 9 (+/0/-) dip switches or a learn button that is GREEN, WHITE, YELLOW, or GREY.  Programming and installation is a snap, don't be locked out of your garage ever again.