... RoHS,SGS certificate 4)manual,wireless available Principle SHIDAI electric roller blinds system use 220V tubular motor (A built-in and ... driving power etc, it’s a upgrade product from manual roller shutter. Reelpipe is high quality aluminum alloy material, high ... oxidation, anti-aging, corrosion preventive. According to the height of roller shutter, reelpipe diameter can be choosed 50mm, 70mm, 80mm or ...