Hyperfan Temperature Speed Controller (18/Cs) The Hyper Fan® Speed Controller is extremely easy to use. Set the two dials and you will have complete control of your environment. The Hyper Fan® Fan/Controller combo has the lowest energy use of any fan/controller system out today. The controller thermostatically changes the fans RPM/ Speed as needed. For use with EC Hyperfans only. All wire connections included.... This item is sold individually. — Ships from H: WA, CA, CO, MI, TN, PA, FL USA....more info.