The LiftMaster 365LM/371LM Security+ 315MHz Plug‑In Receiver and Remote Kit is an external radio control solution designed to add LiftMaster Security+ operation to a wide range of garage door openers and gate operators. The kit pairs the 365LM plug‑in receiver with a 371LM one‑button transmitter, delivering dependable rolling‑code performance that changes the code with every press to help prevent unauthorized access. Ideal as a replacement or upgrade, it enables users to operate older or non‑compatible openers by wiring the receiver’s dry‑contact output to the operator’s wall‑control terminals and then powering the receiver with the included plug‑in supply.
Operating on 315MHz Security+ technology, this kit integrates seamlessly with LiftMaster/Chamberlain systems that use the purple Learn button and accepts compatible 315MHz Security+ transmitters, including the 371LM. Typical installation involves mounting the receiver near the operator, connecting two low‑voltage control wires to the opener’s push‑button inputs, plugging in power, and programming by pressing the receiver’s Learn button followed by the remote. Suitable for residential or light commercial applications, it is a practical path to restore remote control or standardize mixed brands under one radio platform. For safe operation, ensure the door or gate system is equipped with functional reversing sensors and only activate the operator when the area is clear and in view.