050DCTBFMC is a replacement Bluetooth® Receiver Logic Board Kit. For use with various LiftMaster® and Chamberlain® DC Belt Drive and Chain Drive Garage Door Openers with Integrated Bluetooth.

This board is brand new unopened from LiftMaster.  I ordered a replacement and they sent me a duplicate. 

The picture of the box is the actual item for sale. The pictures of the board is of an identical item.

My garage door opener is a Chamberlain Model B4505T.  This board is compatible with other LiftMaster and Chamberlain models. The link below is to the LiftMaster page for this board.

https://www.liftmaster.com/logic-board-bluetooth-enabled/p/050DCTBFMC

Buyer is responsible for determining compatibility.