Overview
The Ruijie Reyee RG‑NIS2100‑4GT2SFP‑HP is a compact, cloud‑managed L2 industrial Ethernet switch designed for harsh environments and small CCTV/industrial deployments. It combines multiple Gigabit PoE downlink ports with SFP uplinks, DIN‑rail or wall mounting, and industrial‑grade surge and EMC protection.

• Ports: 4 × 10/100/1000Base‑T downlink (PoE capable), 2 × 1 Gbps SFP uplinks.
• PoE: Vendor highlights 90 W PoE output; some reseller listings report higher total budgets (120 W or 180 W). Verify the exact PoE budget in the datasheet or on the unit before planning powered devices.
• Environment: IP40 enclosure, aluminium casing, operating temperature −40 °C to +75 °C, 6 kV surge protection, EMC level 4.
• Management: Ruijie Cloud / Reyee app support for remote monitoring and configuration; L2 managed features including ERPS fast failover.

Use cases: CCTV camera networks, small industrial control networks, coastal/outdoor cabinets (with appropriate enclosure), and edge PoE deployments where ruggedised hardware and cloud management are required.

Important notes & safety

• Confirm PoE total budget and per‑port power allocation from the official datasheet or the physical unit before specifying connected powered devices.
• Power adapter is not included — check required DC input and supply options for your region.
• Follow local electrical codes and the installation guide for DIN‑rail/wall mounting and earthing to maintain surge protection effectiveness.
• Warranty and support terms may vary by region — verify with your distributor.