For manual variable speed control of EC motors. All fans with EC-motors from Lindab have 10 Vdc output that can be connected as supply to the controllers.
On the stepless control, Max and Min-mode can be set by adjustment screws under the knob.
On controllers with fixed locations, Pos. 1 and Pos. 2 are set by adjusting screws.
The controller is certified and approved as conforming to electrical safety and interference regulations on all markets.