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

41A5021-B 8/1997 Chamberlain Logic Board RED Learn Button

Chamberlain 41A5389-1 41A5389 Logic Circuit Board Red Learn Button BOARD ONLY!

45DCBR5A 1/25/13 Chamberlain Logic board Yellow learn button 100% Returnable

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

Chamberlain 41A5389-1 Receiver Logic Circuit Board Red Learn Button BOARD ONLY!

craftsman Logic Board 41a5021-c orange Learn Button

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