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The LiftMaster 050ACTBMC is a Bluetooth-enabled receiver logic board replacement kit designed for select LiftMaster and Chamberlain Wi-Fi AC belt-drive and chain-drive garage door openers manufactured from 2011 through 2022. It features a yellow learn button and supports compatible wireless and myQ® functions. Also known as part numbers 1D8088-1, 045ACTWF, 1D8808-3, and 041D8088. Always verify compatibility using the opener manual or replacement parts diagram before ordering.