9470/32-16-11-C1174 digital input/output module Description The Siemens 9470/32-16-11-C1174 is a Digital Input/Output Module designed for intrinsically safe (Ex i) applications in Zone 1 hazardous areas. It is part of the IS1+ Remote I/O system, facilitating the integration of digital field devices into industrial automation systems. Feature And Application of 9470/32-16-11-C1174 Feature Application 16 Channels : The module offers 16 channels that can be configured as inputs