ProView,16-Port 10/100Mb - Unmanaged Industrial Switch w Diagnostics, Extreme temp -40~75°C Communicates with SCADA software via Modbus/TCP Communicates with NMS (Networking management system) via SNMP Port-based QoS for deterministic data transmission -40~75°C operating temperature range (EKI-5526I only) 12 ~48 V DC (8.4~52.8 V DC ) wide-range power input EMS level 3 protection for extreme outdoor environments IEEE 802.3az Energy Efficient Ethernet (EEE) Jumbo Frame Support (Up to 2048 Bytes) Supports redundant 12~48V DC power input and P-Fail relay and Loop detection buy.advantech.eu/I-O-Devices-Communication/Industrial-Communication-Industrial-Ethernet-Switch/model-EKI-5526I-AE.htm