Relay switch with central piece for hotel card Berker S.1/B.3/B.7 in anthracite, matte finish. The switch program is available in polar white glossy (similar to RAL 9010), white glossy (similar to RAL 1013), and red glossy (similar to RAL 3003). It is made of thermoset plastic, is scratch-resistant, and available in polar white matte (similar to RAL 9010) as well as anthracite matte (similar to RAL 7021), which is shatterproof and impact-resistant. The frame is available in 1 to 5 gang and can be installed both vertically and horizontally. The square base shape has sharp corners with a rounding radius of 0.4 mm and a curved geometry with either a glossy or matte surface. The rocker switches/covers have a curved geometry with a side length of 55 mm x 55 mm and corners with a rounding radius of 0.4 mm. The installation devices are suitable for IP 20 / 21. Labeling is partially possible through writable rockers/covers and with writable frames from 1 to 5 gang. The products are abrasion-resistant marked by printing and can be illuminated according to workplace regulations. The materials used are halogen-free and UV-stable, and the surfaces are easy to clean and resistant to disinfectants. Over 200 applications.