Liftmaster 41AB050-1, 41A5483-1C-315, 41AC050-1, 41A5689 Receiver Logic Board

41AC050-1M, 41AB050-1, 41A5483-1C-315, 41AC050-1, 41A5689. For use with various 1/2HP LiftMaster® and Chamberlain® AC Chain Drive Garage Door Openers; manufactured after 2005. The unit will feature a purple learn button.

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