41A5021-2D 2/1999 Craftsman Logic Board Red !!! Square Learn Button

craftsman Logic Board 41a5021-c orange Learn Button

Liftmaster Chamberlain 41AB050-2 Circuit Board Purple Learn Button BOARD ONLY

41A3627 Chamberlain Logic Board GREY Learn Button

Chamberlain LiftMaster 41A5483-4 Receiver Logic Board Red Button, BOARD ONLY.

45DCBR5 3/20/2014 Chamberlain Logic board Yellow learn button

45ACCR2 10/29/15 Chamberlain Logicboard Yellow learn button

Liftmaster Chamberlain 41A5021-3 Circuit Board Red Learn Button -Clean/Tested