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Liftmaster 41A5021-4M-315 Receiver Logic Circuit Board Assembly (315 MHz)
Liftmaster 41A5021-4M-315 Receiver Logic Circuit Board Assembly (315 MHz)
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Liftmaster 41A5021-4M-315 Receiver Logic Circuit Board Assembly (315 MHz)

Item Id: LM-41A5021-4M-315
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Your Price: $105.46
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Liftmaster 41A5021-4M-315 Receiver Logic Circuit Board Assembly (315 MHz) Opener. Liftmaster & Chamberlain Replacement Garage Door Opener Parts.
  • Place a one inch board, or 2x4, under the center of door with the door fully open.
  • Close the door. The door should immediately reverse directions when the garage door hits the board.
  • If the door only stops on the board, instead of reversing directions, increase the Down limit by turning the adjustment screw 1/4 counterclockwise.
We recommend to use with this board the Liftmaster 990LM Garage Door Opener Surge Protector to protect your replacement 41A5021-4M-315 circuit board, due that mostly all logic board fails by power surges.

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