Dahua Technology DH-CS4218-16ET-240 network switch Managed L2 Gigabit Ethernet (10/100/1000) Power over Ethernet (PoE) Black

The Smart Managed Switch is a network switch designed for managing local networks with optional cloud management via the DoLynk Care platform. It supports topology visualization for operation and maintenance, monitors transmission and back-end storage devices within security and IT systems, and features a full-metal housing for improved heat dissipation. The switch operates in ambient temperatures from -10°C to 55°C and provides electromagnetic compatibility along with protections against overvoltage, overcurrent, static electricity, lightning and pulse interference. PoE models deliver power up to 250 meters; the orange PoE port supplies up to 60 W and the red port up to 90 W. Select models support link aggregation and STP for enhanced network stability. Typical deployment scenarios include small and medium-sized businesses such as supermarkets, offices, restaurants, cafés and hotels.

Advantages

Cloud management through the DoLynk Care app enables real-time device monitoring, status display and alarm notifications, simplifying remote administration. LLDP-based topology management generates visual network maps to quickly locate and troubleshoot devices. Robust PoE capabilities include long-distance PoE up to 250 m and high-power output on red ports (up to 90 W) for powering demanding equipment. The full-metal design and broad operating temperature range improve reliability in varied environments, while multiple protection mechanisms reduce the risk of interference and damage.

Key specifications

• Cloud management: DoLynk Care app with real-time monitoring and notifications
• Topology: LLDP support with topology generation and display
• PoE long distance: up to 250 m (with bandwidth reduced to 10 Mbps)
• PoE power: orange port up to 60 W, red (BT/HiPoE) port up to 90 W; supports IEEE802.3af/at/bt and HiPoE on red ports
• PoE Watchdog: automatic detection and restart of failed PoE ports via web control
• Loop protection: loop detection with alarm and elimination mechanism to prevent broadcast storms
• Build: full metal housing with improved heat dissipation
• Operating temperature: -10°C to 55°C
• Protections: EMC, overvoltage, overcurrent, static electricity, lightning and pulse interference protection
• Network features: link aggregation and STP available on select models

How to use

Install the Smart Managed Switch in the network rack or mounting location and connect power and data cables according to the installation guide. For cloud management, register and add the device in the DoLynk Care app to enable real-time monitoring, status display and alarm notifications. Use the web interface to configure PoE settings, enable PoE Watchdog, set up LLDP topology discovery and configure link aggregation or STP if supported by your model. For long-distance PoE, connect devices up to 250 m away, noting that bandwidth is reduced to 10 Mbps for extended runs. Monitor device status via the app or web GUI and use topology visualization to locate and troubleshoot network issues remotely.

Recommendations

For reliable performance, install the switch in a ventilated environment within the specified temperature range and ensure proper grounding. Use appropriate network cabling rated for PoE and follow manufacturer instructions when powering high-consumption devices from red (90 W) ports. Enable PoE Watchdog and topology management to reduce manual maintenance and quickly recover from IPC connection exceptions.