It has taken the world's best specialists and universities over 5 years to develop this system that analyses images directly in the sensor. With the HPD2 – HPD stands for "Human Presence Detection" – STEINEL is making a quantum leap in sensor technology. Because HPD2 is the world's first presence detector that's not only capable of detecting whether people are present but can also count them. No matter whether moving about or not. At the heart of the person sensor is innovative technology that uses a highly sensitive optical system in combination with a complex mathematical algorithm. The HPD2 also has integrated temperature and humidity sensors, opening up completely new possibilities in building automation. At last, not only light but also heating and air-conditioning can now be controlled in line with demand for the number of people present in a room. Identifying actual room use, the HPD2 can also be used for managing meeting rooms or for detecting unused office workstations for flexible desk management.