This repair service is for a Chamberlain logic board with model number 41A5021-4. The bundle includes wires and a harness made of fiberboard material. The compatible brand is Chamberlain and is suitable for traditional style garage doors. The package quantity is one and the features include adjustable voltage. This repair service is for LiftMaster, Craftsman, and Chamberlain garage door openers, specifically for the logic board.