The needle type gauges just take a voltage range. Something like jaw you can configure. IE 9 afr =0v 19afr= 5v. So you can use any afr gauge with jaw.
But it also includes a display like the one in my pics, Can be placed anywhere, and daisy chained, you could ahve 4 displays wired in with egt, boost, rpm and afr. The displays are only £15 each ish!!
See display here
