The LiftMaster 423LM 3-channel garage door opener receiver from Garage Door Supply Company can operate up to three residential or commercial garage door operators. Or, use this coaxial receiver with three-function (open, close, stop) remote control transmitters for commercial garage door operators. This is a 390MHz receiver with an 8-ft. whip antenna.
LiftMaster's FCC-certified 423LM receiver is easy to program. It's compatible with one-button LiftMaster 81LM remotes, two-button LiftMaster 82LM remotes and three-button LiftMaster 83LM remotes. The 423LM is also compatible with LiftMaster 66LM wireless keypads, and dip switch-style one-button 61LM LiftMaster remotes, two-button LiftMaster 62LM remotes and three-button 63LM LiftMaster remotes.