Trolley operators are designed to open and close the door as the carriage is driven back and forth on the horizontal operator track. They are normally mounted on the centerline of the door and parallel to the floor. They require a clearance above the high arc of the door and a space behind the door when it is fully open.
Standard Features:
Main Options: Nema 4/12, Nema 7/9, Dual trolley drive, Delay on reverse, Timer to close, Double limit, Electronic Control Board