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LiftMaster Chamberlain 41A5021-1M-315 Garage Door Opener Circuit Board
The LiftMaster Chamberlain 41A5021-1M-315 Garage Door Opener Circuit Board is very easy to install and program and is the perfect replacement for your malfunctioning or worn circuit board system. It is compatible with parts 41A5021-1M-315, 41A5021-4M-315, 41A6135-1A, 41A6148-1 and 41A6148-1A. This circuit board also works with LiftMaster 1345, 1346, 1355 and 1356 models. We recommend that you also purchase a surge protector to protect your board from power surges and lightening.