The front panel of the controller has the following controls and indicators:
Speed control knob for trickle speed setting
Temperature control knob required temperature setting
Thermostat operating indicator (LED light)
3m long probe attached
Max Wattage - 300w (1.25amps)
Set the desired air temperature (thermostat set point) by turning the thermostat control knob to the airflow rate desired by turning the speed control knob.
If the air temperature increases above the thermostat set point the fan switches to the high speed (maximum airflow rate). If the temperature decreases below the thermostat set point the fan switches to the pre-set lower speed.