Control Freak Intelligent Single Fan Controller 5A NO TEMP PROBE Hydroponics
The Control Freak Intelligent Fan Controller could not be easier to use, with its ?Plug & Play? design and two modes of operation.
You can use it as a manual fan speed controller or use an additional 5m temperature probe (SOLD SEPARATELY) to operate the unit as a fully automatic speed controller.
This controller has smooth speed control, giving a more accurate and a quieter operation.