Liftmaster 41A5507 logic board
Liftmaster 41a5507 and 41a5507B are the same replacement boards for the 2500 dc model. The letter B is the month it was made and is the same board.
Designed for the 2500 dc belt drive without the battery backup 41A5507 LM Logic Receiver Board, 390mhz BD 2pc. Std 2001-2005 Red Learn Button Sec+ For Model *2500
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