Fast shipping & good working
Small functional board for PWM. It was a little unclear to me how to set the temperature manually, because the product image is not very understandable at first. But afterwards it was very simple. For manual mode: you need only press 1x long, then you can set the Tu (minimal temp for 20% speed), then 1 long click, go to Td (=delta or difference of Tmax-Tu) and do the same for selecting the prefered value. Save the settings also with a long click. Between and in the programs (Tu and Td) it can be difficult to get the right setting, then you can try double clicks. This worked for me.