Sunbeamtech announced its Rheosmart family of single and multiple channel fan controllers. There are three parts, the Rheosmart PCI, Rheosmart 3, and Rheosmart 6. The Rheosmart PCI isn’t a PCI addon card, but just a fan controller board that occupies an expansion slot on the back of your case. It lets you control one fan channel with up to 30W of power, and also lets you select between PWM and voltage methods. The Rheosmart 3, as the name suggests, is a 3-channel controller, and occupies a 3.5” exposed drive bay. Lastly, there’s the six-channel Rheosmart 6, which occupies a 5.25” bay. PWM method lets the controller auto-adjust speeds based on system temperatures, under the motherboard’s control. Sunbeamtech did not give out pricing. More pictures follow.