LiftMaster 81LM Remote Billion Code 390MHz

The LiftMaster 81LM is an original one-button garage door and gate remote designed for operators that use LiftMaster’s Billion Code technology at 390 MHz. Ideal as a replacement transmitter or spare, it provides simple, reliable control for compatible LiftMaster, Chamberlain, and Sears Craftsman systems. This single-button remote is engineered for everyday residential use and select commercial applications where a compatible external receiver is present, delivering dependable performance with the legacy 390 MHz Billion Code rolling-code protocol.

Compatibility is limited to operators and receivers that feature the Billion Code system, typically identified by a green “Learn” button on the motor head or receiver. It is not compatible with Security+ (red/orange or purple learn buttons), Security+ 2.0 (yellow learn button), or older dip-switch units. Programming is straightforward: press and release the opener’s green Learn button, then press the remote’s button to pair. For safety and compliance, use only with operators equipped with required photoelectric sensors and follow the manufacturer’s instructions. Common search terms include LiftMaster 81LM remote, 390 MHz Billion Code, green learn button remote, garage door opener replacement, and compatible Craftsman/LiftMaster/Chamberlain remote.