Trade-Air product details:

The Trade-Air is a variable fan speed controller that alters the speed of your fan to maintain a model temperature in your grow room.

The trade-air works by taking readings from an external temperature probe that you place in your grow room and comparing them to the temperature you turn the dial on the front of the unit to. If its too hot the speed of the fan increases, if it is to cold the speed of the fan decreases.

Wiring the Trade-air unit is fairly straightforward and the unit comes with full instructions.

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