One BIG downside. The graphing capability they show in their ads on using the head unit has been dropped without telling anyone. You can graph if you connect up a computer, but not stand alone anymore. Had I known this, I would not have purchased this unit as I was after something that could give me a visual trend without a PC
being on all the time. "Oh, by the way, that unit you bought doesn't do what it says it can do anymore, sorry" doesn't cut it with me.