Our lights. Outside and inside: Material quality. In the construction and purchasing of our luminaires, we follow the same guidelines that characterize our light switches, namely toward a materiality that simultaneously guarantees the durability, functional safety, and good looks of things. This applies not only to the visible parts, but also to the technical inner workings: Sockets made of porcelain, bakelite or steatite, (rarely brass-plated steel), the best, mostly textile-covered cables (from the Vogtland region) and neat, reliable switching mechanisms.