The Control Freak range of Fan controllers is designed to offer a great deal of flexibility and control in an easy to use package. The newest model, the 7A series, allows you to run your AC extraction at super low speeds with absolutely no associated noise from the fans. Thanks to the way the electrical signal is chopped through electrical circuitry rather than resistors, it can be connected and used with any existing extractor fans without the need for re-wiring. Control Freak - Dynamic Frequency Controller 7A is a high performance, fully automatic air temperature control system. These controllers have a unique feature that allows the user to set a lower minimum run speed from 20% to 100%. This means less noise when below the set temp. Control Freak 7A has an integrated filter dryer with pump priming and a pressure switch for automated start up and high pressure protection. The Control Freak is a frequency fan controller that will control both extractor and extraction fans with the latest digital temperature sensing technology available in versions ranging from 3 amp up to 13 amps. Supply Voltage (All units): 220-240 ~ 50Hz so they're perfect for use in the UK. Product not normally stocked within the store please allow up to 1 week for delivery.