<a href=showthread.php?s=&postid=6364059#post6364059 target=_blank>Originally posted</a> by clp
The AC3 can read 2 pH probes or 1 pH and 1 ORP. The 3Pro can read 1 pH, 1 ORP, 1 temp, 1 cond, and 1 oxygen. Next month we'll be shipping a probe expansion module that support additional 1 pH, 1 ORP, 1 temp probes or 2 pH, and 1 temp probes.
Curt