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The LiftMaster 050DCRJWFMC is a Security+ 2.0 receiver logic board replacement designed for compatible LiftMaster and Chamberlain residential jackshaft wall-mount garage door openers manufactured after 2018. It features built-in Wi-Fi, myQ® connectivity, and a yellow learn button for compatible programming and setup. This board is commonly used with the LiftMaster 8500W and other supported wall-mount applications. Always verify the part number and compatibility using the opener manual or replacement parts diagram before ordering.