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Novanex, Inc. |


Phihong POE21u-1AF Single Port Mid-Span PoE Injector



This 60W 56V Gigabit PoE Injector (Power over Ethernet) is a single port IEEE 802.3 AF/AT/BT(type 3) compliant midspan solution that is a compact and easy to install with RJ-45 Ethernet cabling. This elegant unit is ideal for installing any Novanex clock or OAX2 messaging sign. It eliminates the need for external power supply and its associated AC/DC power cabling, providing a compact, affordable, safe and reliable power solution over your wiring or existing Ethernet infrastructure.

The Gigabit PoE Injector is very lightweight and compact. It is an 802.3 AF/AT/BT compliant device, and uses all 4 pairs in a category rated wiring bundle, i.e. CAT5e (or better) run required for Gigabit Ethernet.  It supports both 2-pair and 4-pair PoE outputs, and is ideal for installing Novanex IP PoE devices.

PoE voltage drops over distance. As a rule of thumb you can lose up to 6V per every 100′- 200′ of wiring, depending on the gauge. Lower power also means more amperage means more heat and perhaps issues with the 24 gauge wires in CAT5. You may need to use 18 gauge wiring for best distance results.


  • AC Input (90 – 264VAC) @50/60Hz
  • DC output 60W – 56V DC 1.5A IEEE 802.3 AT/AF/BT Power Over Ethernet Midspan Injector.
  • Please contact for a country-specific IEC 60320C6 grounded power cord if necessary (may delay shipment).
  • Built in auto-recovery, over-voltage and short-circuit difference and common mode protection.
  • Clamping protection – 11V LAN, 60V Power, max surge discharge – 1500A (8/20us) power
  • peak pulse current – 36A (10/1000us) LAN, shunt capacitance – <5 pF LAN
Data Rate
  • 1000Mbps full-duplex Ethernet data


  • (1) LAN RJ-45 10/100/1000 Base-TX autosensing socket for LAN Input
  • (1) LAN RJ-45 10/100/1000 Base-TX autosensing  socket for PoE output
  • Pins 1,2,4 & 5 + power, Pins 3,6,7 & 8 – power


  • Height 1.30″ (33mm) Depth 3.98″ (101mm) Width 2.36″ (60mm)


  • Operational Temperature: -40°F to 176°F (-40°to 80°C)
  • Humidity: 5% to 95%, non-condensing


  • Ruggedized lightweight casing with Power LED indicator

Download full datasheet here: