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PT-7828 series high-performance Layer 3 Industrial Ethernet switches support Layer 3 routing function and are suitable for cross-domain deployment. The PT-7828 switch meets the stringent requirements of Substation Automation Systems (IEC 61850-3, IEEE 1613) and Rail Transit (EN 50121-4). The PT-7828 series is also equipped with critical packet priority (GOOSE and SMV) functions. * PT-7828 series supports Gigabit and Fast Ethernet backbone network, redundant ring network technology, 24/48 VDC or 110/220 VDC/VAC isolated redundant dual power input, which improves the stability of network communication and saves wiring cost. The PT-7828 adopts a modular design, which makes network planning and configuration easier and more flexible. It can install up to 4 Gigabit Ethernet ports and 24 Fast Ethernet ports. In addition, the PT-7828 can choose the way of front/rear outlet, which is very suitable for various applications.