The NA-FC1 is a compact, highly flexible controller for 4-pin PWM fans. It can be used independently for manual speed control or in combination with the automatic fan control of PC motherboards. Using the central rotary controller, users can either manually set a PWM duty cycle of 0 to 100% or reduce the duty cycle transmitted by the mainboard to make the fans run slower than the automatic control of the mainboard allows. While the brightness of the orange status LED provides visual feedback on the current controller setting, the ''No Stop'' mode can be activated by means of the pressure switch so that the fan does not fall below a speed of 300 rpm. Thanks to the supplied adapter cables, up to three fans can be controlled simultaneously and supplied with power directly from the power supply.
