The screw shutter includes a motor, shutter, frame, and protective cover; it utilizes a three-stage reduction method, powered by a spline drive, offering a higher output torque. The shutter is paired with a steel frame to overcome uneven civil engineering, thereby reducing the overall noise and vibration of the unit.

Outdoor-rated long-time operation motor with protection class > IP55. The stroke control mechanism employs a decimal counter principle, controlling stroke error to 0.5%. Torque protection control is achieved by the worm gear generating an axial displacement to trigger a microswitch, thereby protecting the electrical appliance. Operation and maintenance are simple, allowing for both on-site and remote control operations.