it has 2 FoxBoro Micro-IA units, each have 3 racks with AB 1794-ASB's on it, then its got 1794-IT8 for temperature (TC), 1794-OW8 Relay output, 1794-OE4 Analog output, 1794-IA8 120VAC input, 1794-IE8 Analog input, 1794-PS! 24VDC output, all will mgo back to the Micro-IA units then to the computer(running Windows NT v4.0 sp3) via network card. right now my main problem is some of the temperature readings are not accurate, the TC's are about 60' to 100' feet away.