... :The Ci-rf120 series is designed for use in optical S908 RIO fieldbus networks. Feature with data rate up ... ,75Ω Isolation voltage: Instantaneous voltage 5000V, constant voltage 1000V Optical interface Wave length: 850nm,1310 nm,1550nm Fiber type: multi ... ports, transmission distance 20KM, connector ST/SC/FC, Rate data: 1.544M. modem S908 Remote I/O fiber optical repeater (fieldbus application) ...