The LiftMaster LM-MP120KL 120VAC Mounting Plate Adapter is an accessory designed to streamline the retrofit or new installation of select LiftMaster access control devices onto a standard North American 120VAC electrical box. Ideal for residential and commercial gate and door entry applications, this adapter provides a clean, secure mounting surface for compatible LiftMaster keypads, card readers, and entry devices, helping installers achieve a professional finish and proper alignment when replacing older equipment or upgrading to newer models.
This is a non-powered accessory; the “120VAC” designation refers to compatibility with typical in-wall or pedestal electrical boxes used for building power, not to the adapter providing or converting voltage. The plate is intended for use with LiftMaster access control products that specify the LM-MP120KL in their installation instructions or compatibility lists. Installation is straightforward for a qualified installer: disconnect power to the connected device, attach the plate to the electrical box, then secure the access device to the adapter per the product’s manual while following local electrical and building codes. Common use cases include replacement part projects, upgrades, and universal-style retrofits where an existing 120VAC box is already in place at a gate operator, door entry station, or telephone entry pedestal.

