S-110-S1SC20D-XT 10/100Base-TX Industrial Temperature Media and Rate Converter: 10/100Base-TX (RJ-45) [100 m/328 ft.] to 100Base-BX 1550nm TX / 1310nm RX single strand fiber, single mode (SC) [20 km/12.4 miles]. Extended Temperature, terminal block power connector for external power source.