for electrical belt winders, item no. 22750, 22760, 22502 and 22503
- for shutter control according to sun position and twilight time
- automatically shutter closing
- simply plug into the belt winders
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.