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The LiftMaster 050DCTBFMC is a Bluetooth-enabled receiver logic board replacement kit designed for select LiftMaster and Chamberlain DC belt-drive and chain-drive garage door openers manufactured from 2011 through 2022. It features a yellow learn button and restores the opener’s main control and wireless receiver functions. Also replaces or cross-references part numbers 050DCTB, 050DCTWF, 041D8169, 1D8169-2, 001D8214, and 1D8169-1. Always verify compatibility using the opener manual or replacement parts diagram before ordering.