LiftMaster 423LM Gate Receiver 3-Channel (390Mhz)

LiftMaster 423LM Three-Channel Universal Coaxial Receiver (390Mhz) Download Manual The receiver can be used with a multi-function remote control to operate three residential garage door openers, or with a three-button door control to OPEN, CLOSE or STOP a commercial garage door opener. Not for use on residential fail-safe operators. The receiver and antenna use TV Type F coaxial connectors. The antenna can be plugged directly into the receiver or mounted to a bracket and connected to the receiver with Model 86 Coaxial Cable Kit, depending on your requirements. Select a location for the receiver which allows access to the terminals and space for the antenna (as far from metal structures as possible and preferably with the antenna in an upright position). Fasten the receiver securely with screws through the two holes provided in the cover flanges. Features Smart Garage Door Opener® electronics on each channel for fast programming Open/close/stop functions for commercial operator appli