When the library was built, the decision was made to install a KNX-based building automation system as a way of perfectly controlling all the main building functions, such as lighting. KNX sensors from STEINEL can be integrated throughout the building system quickly and easily. The HF 360 KNX from the tried and proven STEINEL Presence Control PRO range was chosen for detecting movement in the library. It not only has the task of minimising energy consumption, but also of providing the perfect balance of natural and artificial light.