Make cheap fan control from old thermo p.3

Refitting the case to the Printed Circuit Board and the pin now appears through the next door hole.
The finished mounting board is fixed to the shed wall near the fan and the mains wires reconnected.

Remember in the UK for outdoor, kitchen and bathroom installations you must have the work inspected by a qualified electrician. It's also essential to have outbuildings fed by RCD safety units with good earths.





Setting the unit to 30 degrees means that once the temperature is reached, the "Make" contact clicks and power is switched ON to the fan which runs until the temperature drops back.

Job Done. 25 pence plus a scrap of plywood.