Industrial managed switch 19"/1U supporting redundant LAN-RING topology with ports 2x SFP+ slot 10 GBASE-R / 1000 BASE-X, 1x RJ45 port 10/100/1000 BASE-T, 24x RJ45 port 10/100 BASE-T with PoE, 2x RS485 / Modbus-RTU bus, 2x digital/alarm input, 1x programmable relay output, 3 independent power inputs, Redundant LAN-RING topology, RSTP, Surge protection up to 30A (8/20µs), Event management IP Watchdogs, HTTP/ONVIF client, ETH/TCP events, Modbus, DI/relay/alarm. Loops..., VLAN, QoS, SNMP, SMTP, SNTP, IGMPv1/2, RSTP, LLDP, 802.1X, Operating temperature from -30°C to +50°C. 320W Internal power supply.