8-port Giga-bit Managed Forming one of the fastest-recovery Redundant Ethernet Rings with recovery time < 10ms over 250-unit connection Supporting "iA-Ring", Ring Coupling and Dual Homing Topologies Supporting SNMPv1/v2/v3, RMON & Port based/802.1Q VLAN network managements Event notification by Email, SNMP trap and Relay Closing Web-based, Telnet, and CLI configurations Proprietary Windows utility EtherManager for switch configuration and network management Redundant DC power inputs on the terminal block plus a DC-Jack Current overload protection Reverse polarity protection -10~60°C extended operating temperature

Modbus is an industry adopted communication protocol based on RTU, ASCII,and TCP protocols for various applications.