Ceiling mounted presence detectors with square detection area

In contrast to a circular detection area, the square detection area of the Theben presence detectors has several advantages. Firstly, it makes planning easier in square rooms, and there are also no overlapping or "blind spots" that you can get with circular detection areas. A large room can be completely monitored with just a few devices. With its constant light control, the presence detector constantly measures the light levels in the room. As the natural light brightness level changes, the presence detector controls the lighting units to maintain a set light level value (Lux). This creates the correct working environment and saves energy, and when no one is present the lights are turned off. Overview of Theben ceiling-mounted presence detectors: