IES-1000 Series are designed for industrial-grade Ethernet, and particularly for facilities of rugged industry and infrastructure. These switches are tailored to perform various features, such as wide temperature, redundant power input (8-port models), relay output alarm, surge protectionKetc. The 8-port models of IES-1000 Series offer three different power inputs to enhance its reliability, two supplied by terminal block, and one by power jack. When the primary DC power input fails, the backup power input will take over immediately to guarantee a non-stop operation. Thus, the IES-1000 Series is the best choice for facility management, sewage treatment, power utility, telecommunication, transportation and all other mission-critical applications that require reliable Ethernet connectivity.