The classic among the flat switches. Thanks to its high quality and clear shape, the LS 990 switch range has already proved its worth for about 50 years. The classic form of this switch with its narrow frame fits harmoniously into any surroundings. Purist elegance in thermosetting plastic or genuine metal lend this series a touch of class. A wide variety of applications are possible thanks to the wide functional spectrum. Thus, architecturally demanding visions can be consistently put into practice. The single to fivefold frames can be fitted horizontally or vertically.