Industrial Ethernet Ring SwitchEOTec 2104 industrial Ethernet ring switch is preconfigured for ring redundancy, offering virtual plug-and-play for quick startup and commissioning. The switch uses self-healing ring topology, has a recovery time of 30 ms + 5 ms/hop, and real-time data transfer with IEEE 802.3 Ethernet compliance. Two local and one global relay alarm contact are included, and expansion modules are available for additional copper/fiber ports.