Weller WLC100 control knob

what is the 1 2 3 4 5 mean? is the wattage, that cant be, its too low. how does the control knowb determine temperature?

Picture of Weller WLC100 control knob
CameronSS8 years ago
It does determine wattage, but the scale is simply an arbitrary 1-5 scale. 5 is maximum power delivered to the iron, 1 is the lowest, and the others are in the middle. More wattage=more temperature.