SR-1110-SC20U - 10/100/1000 Industrial Media and Rate Converter: 10/100/1000BASE-T (RJ-45) [100 m/328 ft] to 1000BASE-BX 1310nm TX / 1490nm RX single strand fiber, single mode (SC) [20 km/12.4 miles]. DIN Rail case, terminal block (Combicon) power connector for external power source