Chapter 1: Introduction
NS3552-8P-2S-V2 User Manual 11
• Up to four ports of IEEE 802.3af/IEEE 802.3at devices powered.
• Supports PoE power up to 15.4 W or 30.8 W for each PoE port.
• Auto detects powered device (PD).
• Circuit protection prevents power interference between ports.
• Remote power feeding up to 100 m.
• PoE management:
• IEEE 802.3af and IEEE 802.3at mode switch control
• Total PoE power budget control
• Per port PoE function enable/disable
• PoE admin-mode control
• PoE port power feeding priority
• Per PoE port power limitation
• PD classification detection
• Intelligent PoE features:
• Temperature threshold control
• PoE usage threshold control
• PD alive check
• PoE schedule
• PD power recycling schedule
Industrial case and installation
• IP30 aluminum case
• DIN-rail and wall-mount design
• 48 VDC redundant power with polarity reverse protect function
• Supports 6000 VDC EFT protection for power line
• Supports Ethernet ESD protection for 6000 VDC
• -40 to 75°C operating temperature
Digital input and digital output
• Two Digital Inputs (DI)
• Two Digital Outputs (DO)
• Integrates sensors into auto alarm system
• Transfers alarm to IP network via email and SNMP trap
Layer 2 features
• Prevents packet loss with back pressure (half-duplex) and IEEE 802.3x PAUSE
frame flow control (full-duplex).
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