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![BullFan- 7 AMP frequency regulator, Pro air extractor controller [refurbished]](https://static1.cultureindoor.com/47157/bullfan-7-amp-frequency-regulator-pro-air-extractor-controller-refurbished-.jpg "BullFan- 7 AMP frequency regulator, Pro air extractor controller [refurbished]")
The Frequency Controller allows you to control the temperature of your quiet fans at low speeds more efficiently, without noise.
Bullfilterpresents its new range of specialized climate controllers, BullFan controller. Take control of your ventilation system, all automatically and very easy to use. The Frequency Controller allows you to control the temperature of your silent fans at low speed more effectively, without noise.
