The 5 amp Control Freak digital fan controller can be used to speed up or slow down your fan as required. Simply plug in your fan and adjust the dial until the optimum speed is reached.
However this only utilises a small part of this product, by attaching the thermostat (not included) it turns this unit into an intelligent controller which through Fansync software allows it to maintain a constant temperature. Again just plug in your fan and set the desired temperature and fan speed and let the unit do the rest.
This unit can run fans up to 5 amps, has an accurate temperature adjustment with a smooth fan speed control. Please note this is not a silent fan speed controller