A ventilation controller including at least one humidity sensor for controlling the humidity of a room. The exhaust emission control has a particulate filter for filtering particulate matter from the exhaust of the internal combustion engine, at least one temperature sensor for detecting the temperature of the exhaust, an evaluation unit for evaluating the detected temperature, particularly with regard to a particulate mass burned during a regeneration operation of the particulate filter. In another embodiment, the catalyst comprises a metal selected from the group consisting of zinc, cobalt, iron, tin and combinations thereof having a copper-containing coating at the surface thereof. The mounting height and distance of source and the detector can also be adjusted. Each of said pixels includes sub-pixels that are each provided with a static random access memory and an electro-optical element.