SR-100-SC20U-XT – Fast Ethernet Industrial Media Converter: 100Base-TX (RJ-45) [100 m/328 ft] to 100Base-BX 1310nm TX / 1550nm RX single strand fiber, single mode (SC) [20 km/12.4 miles], -40F to +167F (-40C to +75C) extended operating temperature support. DIN Rail case, terminal block (Combicon) power connector for external power source