LiftMaster 050DCTBMC Garage Door Opener Logic Board 84501 84602 87504-267.
LiftMaster 050DCTBMC Logic Board. Compatible with LiftMaster garage door opener models: 84501,84602 and 87504-267. Genuine LiftMaster part. Compatible with Chamberlain garage door opener models: B4603T, B4613T, B4643T, B6713T and B6753T.