Cheap & effective way to control your intake or out-take fans speed. A reduced fan speed means significantly reduced noise levels. Plug your fan directly into this unit, then the unit into the wall socket, you can then adjust the intensity of the fan, controlling the speed with the knob on the front of the unit. Simple, cheap and effective, this will give you more control over smaller low powered intake or extractor fans.
53mm x 63mm x 98mm