Setting up and operating a KNX system requires system components. These make it possible to create networks of all sizes, from little ones with a few subscribers through to large, globally networked installations. This system is used to operate the Wieland KNX (EIB) device series. Wieland Electric focuses on the core area of decentrally instaled inputs/outputs. To supplement these core products, further functions like presence and motion detectors and push-button interfaces, etc. are offered.