The LiftMaster K-N7GH7543M E-BOX (part number N7GH7543M) is an OEM electrical control box assembly engineered for select LiftMaster GH commercial hoist operators. This factory replacement houses the operator’s control circuitry and connection points that manage open, close, and stop functions, safety-device inputs, and accessory interfaces. It is intended for service and repair when the original control enclosure or electronics require replacement, helping restore reliable operation on industrial and commercial doors driven by compatible LiftMaster GH operators.
Because E-BOX assemblies are model- and configuration-specific, compatibility must be confirmed against the operator’s model, logic version, voltage, and phase using LiftMaster technical documentation or the equipment data label. Installation should be performed by a qualified commercial door professional with power locked out, followed by programming per the operator manual and verification of limits and monitored safety devices in accordance with UL 325. Typical applications include sectional and rolling steel doors in commercial or industrial facilities using LiftMaster GH hoist operators. This is an OEM replacement part (not a universal retrofit) commonly searched as a control box assembly, E-BOX, or replacement electronics for LiftMaster GH operators under part numbers K-N7GH7543M and N7GH7543M.