The Allen-Bradley/Rockwell Automation 1756-RMC1 is a fiber optic cable that is used to connect redundancy modules in the ControlLogix series and is part of the 1756-RMx series. This fiber optic cable has a length of 3.28 feet (1 meter) and has dimensions of 8.5 /125 micron. It has an LC Type connector and offers single mode operation with one channel for transmitting and receiving data. Up to two of these cables may be required for an assembly.