Ive got a Profilux 3ex on my RSM130D also.
It monitors temp, salinity, conductivity, redox and PH. It controls heat, skimmer and pumps (via GHL Powerbar), cooling via Profilux Breeze (4 Fan unit), an MP10WES via the ecotech bridge, 2 part dosing via GHL Dosing unit and hopefully in the near...