The LED panel can be dimmed but the brightness range and the linearity (rotation range) I would like to see a little bit bigger. ie the minimum brightness is ok for my use in the office. Of the 270 degree range of rotation of the rotary switch only about 90 degrees can be used, then the light is fully on.
For my needs (office) I give 4 stars, for other rooms (eg children) but I would give only 3 Stars.