The LiftMaster STAR450-390 is a stand-alone radio receiver designed to add or restore remote-control access to compatible gate operators and garage door openers that accept a dry-contact input. Engineered for 390 MHz operation, this external receiver works with LiftMaster/Chamberlain Security+ 390 MHz transmitters, making it a practical replacement part or upgrade when an operator’s built-in radio is missing, outdated, or incompatible. It’s suitable for residential and light-commercial applications and installs by wiring its relay output to the operator’s control terminals to enable remote activation.
This model uses learn-button programming to store multiple transmitter codes and supports standard Security+ 390 MHz remotes and wireless keypads from the same family. As a low-voltage accessory receiver, it is typically powered from the operator’s accessory output or a separate transformer and is intended for indoor or protected mounting near the control equipment. For compatibility, pair it only with Security+ 390 MHz devices—not with Security+ 2.0 (tri-band) or older dip-switch remotes. Always follow the operator’s manual and local codes during installation, and ensure required entrapment protection is in place for gate and door systems.