... /H duplex, MDI/MDI-X auto negotiation4. Broadcast storm protection5. Relay output warning for power failure and port break alarm6. Redundant ... : 2,5Km,optionalWavelength: 850nm, 1310 nm, 1550nmAlarm output interface: One relay alarm output. Support power, port link and network alarm Indicator ... and single fiber is optinal 8 ports Unmanaged Industrial Ethernet Switch Series Ck-if71-S