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Managed Switch Digitus Industrial 4+2-Port L2 Gigabit Ethernet PoE
The Digitus DN-651155 is a managed industrial Gigabit Ethernet switch with 4 RJ45 ports and 2 SFP uplink ports. Designed for harsh environments, the IP40 metal housing, redundant 48–57 V DC power input and an operating temperature range from -40 °C to 80 °C make it suitable for monitoring, control management and wireless services. Ports 1–4 support IEEE 802.3af/at PoE with up to 30 W per port.
This L2 managed switch provides advanced Layer 2 features such as VLAN management, spanning tree support, link aggregation and fast recovery mechanisms. It includes IGMP and MLD snooping for multicast optimisation, ACLs and QoS for traffic prioritisation, and multiple management interfaces including SNMP and CLI. Rugged design with ESD/EFT protection up to 6 kV and easy DIN-rail mounting suit industrial use cases.
Install the switch on a standard DIN top-hat rail and connect the redundant DC power supply (48–57 V). Connect network devices to the RJ45 ports or SFP uplinks; enable PoE on ports 1–4 if powering endpoints. Configure VLANs, QoS, ACLs, link aggregation and other L2 features through SNMP, CLI or the device management interface to match your network design. Use IGMP/MLD snooping to manage multicast traffic and spanning tree protocols for loop prevention and fast topology recovery.
For reliable operation, use appropriate surge protection on the DC supply, ensure ventilation around the IP40 metal housing, and verify PoE power budgets when connecting multiple 30 W devices. Regularly back up configuration settings and monitor the device via SNMP for timely maintenance.
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