The new presence detector WIDE UP 258Dx1 from Siemens Smart Infrastructure can now for the first time contribute to energy-efficient lighting and climate control without having to rely on additional accessories thanks to its built-in multi-sensor technology. It is part of the GAMMA instabus building system technology portfolio, a series of products based on the worldwide KNX standard and with five different sensors for HVAC and lighting control. Dedicated sensors record presence, brightness, temperature, humidity and CO2 levels, guaranteeing perfect room conditions in commercial buildings with substantial room depth and high occupancy fluctuations.