Manual Winder Control
The unit connects to the roller shutter via nylon cord that runs down the wall connected to a pulley, which is attached to the shutter pellet.
To operate you rotate the grip clockwise to open the shutter and anticlockwise to close the shutter. If you continue turn the handle anticlockwise until it stops this position.
This is suitable in all applications where there is enough room to turn the handle and the size of the shutter is less than 3.5 square meters.