This is a professional asset for rendering on Vray.
Additionally you can allways download the Real Time version you see right here. You get both buying from sketchfab. Watch de video to observe the Custom Config panel in Vray (Is in spanish, sorry) But with so few well grouped options and words like "Color" for color and "Intensidad" for Intensity i guess you can make it work!
https://youtu.be/6c1en3S9vN0