The world's first real presence detector. No more unnecessary follow-up time - no more unnecessary electricity costs. 100 percent reliable detection through the finest high-frequency measurement of the environment. The True Presence detector reliably detects the presence or absence of people on an area of 64 m2 - through physical micro-movements caused by human vital functions such as the up and down movement of the chest or shoulders caused by breathing. The new standard in building automation. Easily controllable via app via Bluetooth.