The 390LMR2V Security+ 390MHz Compatible Remote is a two-button garage door and gate controller designed as an aftermarket replacement for LiftMaster, Chamberlain, and Sears Craftsman openers that use Security+ rolling code technology at 390 MHz. It operates up to two doors or gate operators through the opener’s built-in radio receiver or an external compatible receiver, making it a practical replacement part or spare for residential and light-commercial applications. Compatibility is typically identified by a red or orange “Learn” button on the opener head. This remote is not compatible with Security+ 315 MHz systems (purple Learn button), Security+ 2.0 tri-band systems (yellow Learn button), or older Billion Code/green Learn button units.
Programming is quick using the opener’s Learn button: press and release the Learn button on the opener, then press the desired button on the remote until the indicator flashes or clicks to confirm pairing; repeat for a second button if controlling another device. As with any rolling code Security+ remote, transmissions are encrypted to help reduce unintended access. For safe operation, program and test the remote only when the doorway area is clear, verify proper function of photo-eyes and auto-reverse features after programming, and clear and reprogram all remotes if a transmitter is lost. Common use cases include replacing LiftMaster 971LM/972LM/973LM-style transmitters and other Security+ 390 MHz remotes used on compatible Chamberlain and Craftsman openers; to confirm, check the opener’s Learn button color and frequency label before purchase.