Industrial switch for RING topology with 2x SFP slot, 3x FE PoE port, 2x DI with balanced loop support, 1x programmable NO/NC RELAY output, 2x RS485/1x RS422 BUS (support for MODBUS modules, TCP server, UDP mode), USB port for local management, redundant power input, fine surge protections, EVENT MANAGEMENT: SMTP, TCP events, ETH events, HTTP client (camera control), 8x IPWatchdog.... , operating temperature –40...+70°C, VLAN, QoS, IGMP, SNMPv2/v3, SNTP, installation on flat surface or DIN35, 12VDC/24VDC/48VDC/12VAC/24VAC/56VDC