Caution:
Positive and negative terminals and supply voltage. The power supply fan is connected and ready for use. The potentiometer is closed anticlockwise to the bottom and the clockwise end is maximum output. A separate small adjustable resistor (start-up speed adjustment) on the board is used to adjust the speed in the just turned on position.
Fan Current 3A This current is limited by the switch and connector. For fans above 3A, connect the high-current fan in the following way: the positive and negative terminals of the fan power supply can be connected to the power supply, the positive and negative terminals of the fan are connected separately to the power supply, the negative terminal of the fan is connected to the negative terminal of the board; the speed measurement and control are connected to the board.