MI8O2 - Input/Output units * 8 digital inputs * 2 inputs for Start/Restart interlock and external device monitoring (EDM) * 2 pairs OSSD safety outputs (PNP 400 mA) * 2 status outputs (PNP 100 mA) * 4 test outputs MI8O4 - Input/Output units * 8 digital inputs * 4 inputs for Start/Restart interlock and external device monitoring (EDM) * 4 single OSSD safety outputs or 2 pairs (PNP 400 mA) * 4 status outputs (PNP 100 mA) * 4 test outputs