The LiftMaster 050ACTWFATS Logic Board is the genuine OEM replacement control board engineered specifically for the LiftMaster ATSW light-duty commercial trolley operator. This board is the brain of the operator—managing motor control, travel limits, safety inputs, and radio communication—so replacing a failed or intermittent board restores reliable door operation. Designed for ATSW systems with integrated Wi‑Fi, it supports LiftMaster myQ for smart monitoring and control, and pairs with Security+ 2.0 remote controls and wireless keypads for dependable access management in commercial and industrial applications.
Use this replacement when servicing an ATSW operator that shows control-board faults, inconsistent operation, or loss of wireless functionality. Installation involves disconnecting power, swapping the board, reconnecting existing harnesses and terminals as labeled, then reprogramming door travel limits, force settings, and accessories; remotes and keypads must be relearned, and Wi‑Fi setup is completed through the myQ app. For safe operation, ensure monitored photo eyes and other entrapment protection devices are installed and functioning per UL 325 guidelines and the LiftMaster manual. Compatibility is model-specific: verify that your operator is the ATSW and that the original part number matches 050ACTWFATS before replacement.