Sunbeamtech Rheosmart 6 Fan Controller Review

Operation

As we previously mentioned, the key feature of the Rheosmart 6 is that it can control each fan manually (thorugh potentiometers) or automatically (based on a motherboard CPU cooler PWM signal).

The button below each potentiometer selects the control mode for that fan. In manual mode, the LED above the knob is lit in green, and the potentiometer fully controls the fan. If the LED is red, the fan is in automatic mode, and the Rheosmart 6 controls it based on the PWM signal that the motherboard sends to the CPU cooler, which typically depends on the processor load and temperature.

This means that you can have some of your case fans working together automatically with the CPU cooler, and the other ones under manual control.

Notice that the Rheosmart 6 doesn’t control the CPU fan, which continues to be controlled and powered by the motherboard.

Figure 7: The Rheosmart 6 working