Central piece with lock for roller shutter key switch Q.1/Q.3 in polar white, velvet finish. The switch program is made of thermoplastic, is scratch-resistant, and available in polar white (similar to RAL 9010). The frame comes in single to five-gang versions and can be installed both vertically and horizontally. The square base shape features rounded corners with a radius of 4 mm and a flat geometry with a velvety surface. The rocker covers have edge dimensions of 58 mm x 58 mm and also rounded corners with a radius of 2 mm. The socket central pieces and many other central pieces create a flush surface with the frame. Installation devices can be partially waterproofed to IP 44 standards using a separate sealing set. There is an option for labeling through writable frames, available in both vertical and horizontal orientations, in single to five-gang versions. The products are abrasion-resistant, marked using laser technology, and can be illuminated according to workplace regulations. The material used is halogen-free and UV-stable, with surfaces that are easy to clean and resistant to disinfectants. Over 270 applications.