Description

Product Description

The Dahua DH‑CS4228‑24GT‑240 is a professional‑grade smart managed Gigabit PoE switch designed for demanding network environments such as office systems, retail premises, educational institutions, and multi‑camera surveillance installations. Equipped with 24 × 10/100/1000 Mbps PoE‑capable ports, it provides both power and data connectivity to network devices like IP cameras, wireless access points, and VoIP phones over a single Ethernet cable.

In addition to its PoE capabilities, the switch offers 2 × Gigabit RJ45 uplink ports and 2 × Gigabit SFP fiber uplinks for flexible backbone network connections. With a substantial 240 W total PoE budget and support for multiple PoE standards (including IEEE 802.3af, 802.3at, 802.3bt, and Hi‑PoE), it can power a wide range of devices directly from the switch without external power injectors.

The switch supports advanced Layer 2 features including VLANs, STP/RSTP redundancy, link aggregation, loop protection, and MAC + port binding. It also includes cloud‑enabled management via DoLynk Care and a local web interface for network configuration, monitoring, and maintenance. A rugged metal chassis, wide operating temperature range, and built‑in protection against ESD and lightning enhance reliability in professional settings.

Specifications (Verified & Accurate)

📡 Ports & Interface

• PoE Ports: 24 × 10/100/1000 Mbps RJ45 (PoE)
• Uplink Ports: 2 × 10/100/1000 Mbps RJ45
• SFP Ports: 2 × 1000 Mbps SFP
• Total Ports: 28 Ports

⚡ PoE Features

• PoE Protocols: IEEE 802.3af / IEEE 802.3at / IEEE 802.3bt / Hi‑PoE
• PoE Output:
  • Ports 1–2: up to 90 W each (Hi‑PoE capable)
  • Ports 3–24: up to 30 W each (PoE+/PoE)
• Total PoE Budget: 240 W
• PoE Management: Power control, PoE on/off, overload protection
• Long‑Distance PoE Support: up to 250 m @ 10 Mbps

🚀 Performance

• Layer: Layer 2 Smart Managed
• Switching Capacity: 56 Gbps
• Packet Forwarding Rate: 41.66 Mpps
• MAC Address Table: 8K entries
• Packet Buffer: 4 Mbit
• Jumbo Frame Support: up to ~15 KB
• VLAN: Up to 32 VLANs (IEEE 802.1Q)
• Link Aggregation: Static / LACP
• STP / RSTP Redundancy

🧠 Management & Features

• Cloud Management: DoLynk Care platform
• Local Management: Web UI / App
• DHCP Client
• Flow Control: IEEE 802.3x
• Broadcast & Multicast Storm Control
• Port Isolation
• PoE Watchdog & Loop Protection

🛡️ Protection & Reliability

• ESD Protection: 8 kV air / 6 kV contact
• Lightning Protection: 6 kV common / 1 kV differential
• Operating Temp: –10 °C to +55 °C
• Operating Humidity: 10%–90% non‑condensing
• Storage Temp: –40 °C to +75 °C

⚙️ General

• Build: Metal chassis (desktop & rack mount)
• Power Supply: 100–240 V AC, 47–63 Hz (built‑in)
• Power Consumption: Idle ≤ 11.8 W; Full load ~253.5 W
• Dimensions: 440 × 228.8 × 43.65 mm
• Net Weight: ~2.55 kg

Key Features

✔ 24 × Gigabit PoE ports with support for IEEE 802.3af/at/bt & Hi‑PoE
✔ 2 × Gigabit RJ45 and 2 × Gigabit SFP uplink ports
✔ 240 W total PoE power budget with intelligent PoE management
✔ Support for long‑distance PoE transmission up to 250 m
✔ Layer 2 smart features: VLAN, STP/RSTP, link aggregation, loop protection
✔ Cloud management via DoLynk Care and local web UI
✔ Robust metal construction with ESD and lightning protection
✔ Ideal for mid‑sized business, retail, campus, and CCTV deployments

Typical Use Cases

✔ Medium‑scale IP CCTV PoE networks
✔ Wireless access point and VoIP deployments
✔ Managed office LAN expansion with PoE devices
✔ Cloud‑managed network monitoring and maintenance
✔ Retail, education, and enterprise environments requiring centralized PoE and intelligent networking