... from/to Fiber Optic Series Converter/Repeater RS232/RS485 from/to Fiber Optic, Converter/Repeater Fiber Optic to RS232 to RS485, Optic fiber devices, ... one electrical interface. The modems provide fiber optic connection in point to point, star, daisy chain topologies networks ... fiber, dual fiber ports, transmission distance 20KM, connector ST/SC/FC, Rate data: 0-10M. RS-485/232/422 serial to Fiber ...