Alongside the ventilation range of products there is an extensive range of control technology available, used to regulate the speed of fans. Through fan speed regulation, the air flow delivered by the fan is controlled. The whole purpose of fan speed control is to achieve optimal air quality levels – for example in occupied rooms or for industrial processes. Ziehl-Abegg develops and produces controllers utilising different methods of speed control. This variety of fan speed control methods enables Ziehl-Abegg to offer fan speed control solutions which are accurately aligned with the preferences and demands of discerning customers.