Siemens Electronics module ET 200S, I-2-wire, 4-20mA*** Spare part *** SIMATIC DP, Electronics module ET 200S 4AI standard I 2 wire, 4 20 mA; 13 bit, 15 mm width, for 2 wire transducer Cycle time 40 ms module with SF LED (group fault) SIMATIC ET 200S is a modularly scalable, distributed I O system that is specially designed for installation in small control boxes near the machine. The modules can either be plugged directly into an ET 200S IM with CPU functionality or connected to a central controller