LiftMaster MJ5011 medium duty logic jackshaft operator for high or vertical lift sectional doors or small rolling doors and grilles. It has a high starting torque motor with overload protection and an adjustable friction clutch. The MJ5011 has a medium-duty programmable integrated circuit board and a built-in 315MHz receiver. Comes with a 3-button control station, for open/close/stop functions.
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