The ISM5012D is a managed industrial Ethernet switch designed to meet industrial application scenarios in power, transportation, industrial control and other harsh environments. The ISM series can operate in an extreme environment of -40~+85. It integrates convenient safety management features and wire-speed forwarding performance. A sturdy casing and protected circuitry support ERPS and STP/RSTP/MRST ring network redundancy protocol support enhanced network management protocol to meet the industrial application requirements of harsh production.