The YN-SI2700AE Series L3 Industrial Switch is a highly reliable managed switch equipped with 10/100/1000BASE-T (RJ-45) and 1000BASE-X (SFP) interfaces. The YN-SI2700AE features a redundant power input with reverse polarity voltage protection, metal housing, EMI protection and an extended operating temperature range of -40 to +85C. The model is designed to meet industry standards for operation in electrical substations.