Fan controllers optimise the control of the air flow in your grow room. The running speed of the air extractor should be adapted to the temperature inside the room. When the temperature drops, for example when the lights are off, the fans can run at a lower speed because there is less heat to be extracted.
The additional advantage is that fans consume less power and produce less noise in this dimmed mode.
All controllers offered by us are equiped with a temperature sensor, temperature setting and minimum speed setting.