Looking forward is followed by looking up. The True Presence was developed as the first true presence detector. It reliably reports whether a person is in the room or not. This means that, for the first time, reliable absence detection is also possible. This information can be used to reliably switch lights without lag times and avoid unnecessary electricity costs. Its knowledge of true presence or absence also offers many other applications that are of the greatest value for building management. It sets the new standard in modern building automation.