PSSu E S 2AI I se 312450 PSSu, electronic module, standard, analogue inputs and outputs, 2inputs, 2 configurable current ranges 0/4 – 20 mA, single-pole, referenced toearth resolution 12 Bit. The PSSuniversal Assistant is used for selection of the modules and for configuration of the decentralised I/O system PSSuniversal.