There are several heating powers as stated by everyone, more target temperatures which have the effect that cut the plate when the temperature sensor in the center of the plate detects the correct temperature is reached, it is a little damage, a finer control would have been more convenient and more difficult to implement in the control software.
I had to dismount from my plate because the fan (120mm 24v if I remember correctly) was more than strange noise friction and indeed there was resistance in the stator of the fan that touched the rotor magnets Occasionally, once replaced no sound.
This is a sign of quality construction and choice of fairly basic but sufficient components to what is asked: heat a pan ...
