There's no need to calibrate any CommBox Panel as they are intelligent enough to calibrate themselves, even if there is an object blocking the sensors! In some cases it may appear that the panel isn't calibrated because the touch isn't synced, this is most likely a screen ratio/scaling issue. This can be fixed by adjusting the display settings on your computer.


For steps on adjusting the display settings on your computer search for the article 'My touch screen isn't displaying my computer properly'.