8030-CRM-931. The CRM931 Remote I/O (RIO) adapter module provides a communication interface between a Quantum processor and remote Symax I/O on a RIO network. The interface provides a means for the processor to read and write to the input and output of the Symax I/O modules. Electrical under voltage lockout circuit halts and resets the module and remove it from the RIO network when the incoming DC supply voltage falls below approximately 4.6 VDC.