SR-1000-ST05-XT – Gigabit Industrial Media Rate Converter: 1000Base-T (RJ-45) [100 m/328 ft] to 1000BASE-SX 850nm multimode (ST) [550 m/1804 ft], -40F to +167F (-40C to +75C) extended operating temperature support. DIN Rail case, terminal block (Combicon) power connector for external power source .