Central piece with lock for jalousie key switch Q.x in aluminum with a matte finish. Switch program made of durable plastic, scratch-resistant, in polar white color (similar to RAL 9010). Frame available in 1 to 5-gang, usable both vertically and horizontally. Square base shape with rounded corners featuring a 4 mm radius, with a flat geometry and velvety surface. Rockers/covers with dimensions of 58 mm x 58 mm and rounded corners with a 2 mm radius. The socket central pieces and many other central pieces create a flush surface with the frame. Installation devices can be partially used with a separate sealing set for water protection UP IP 44. Possibility for labeling with writable frames, both vertically and horizontally, in 1 to 5-gang. Abrasion-resistant product labeling through laser technology. Illuminable according to workplace regulations. The material used is halogen-free and UV-stable, surfaces are easy to clean and resistant to disinfectants. Over 270 applications.