Plug in Fan Speed Controller, Dimmer Control, Reducer Hydroponics
GrowGadgets Fan speed controllers have made expensive fan controlling units redundant.
These are cheap and effective way of reducing a fans speed resulting in significantly reduced noise levels.
Plug your fan directly into the unit and then plug the unit into the wall. No wiring is required. You can control the fan speed by turning the knob on the front of the unit.
Maximum power: 300W or suitable for fans up to 200mm (8 Inch)
Voltage: 230V, 50Hz