I have used this light pad for a couple of weeks now to do my diamond painting on. It works great, is thicker than my A4s I have used previously, but still light enough to move from one place to another. Fits 12x16 canvas without overhang.
The dimming feature is easy to use~ after turning on, hold your finger on the power button, thats it. Hold finger down until you get the brightness level you want. Once to brighten, again to dim iit. It will also remember what setting you had it on after powering off.
My ONLY issue is that it does not come with a cord for US electrical outlets. Thankfully, I also have the Huion A2 (US cord) that uses the same size end, to plug into the light pad.
I am very grateful to have found the Huion brand by Kenting!