The LiftMaster 100MAPS External Power Supply for Light Curtains is a genuine LiftMaster accessory engineered to provide dedicated power to LiftMaster light curtain safety systems used on commercial and industrial door operators. When adding a monitored light curtain to an overhead door, rolling steel door, or grille, the operator’s built-in accessory output may not supply sufficient power for reliable performance. The 100MAPS solves this by delivering a stable power source to the light curtain array, helping maintain consistent operation, reduce nuisance faults, and support UL 325 entrapment protection requirements when used with compatible LiftMaster operators and monitored sensors.
Ideal as a replacement part or upgrade for new installations and retrofits, the 100MAPS is designed for professional use in warehouses, loading docks, automotive service bays, and other commercial environments where dependable safety devices are essential. Installation should be performed by a qualified technician following the light curtain and operator manuals, including proper wiring practices, mounting in a protected location, and adherence to all local codes. Use the 100MAPS when the door operator’s accessory power is limited or long wire runs demand a dedicated supply, and consult LiftMaster documentation to confirm compatibility with your specific monitored light curtain and operator model.