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POE-4 PoE Injector 4 Port Passive Mode B Power Over Ethernet Injector - Power Adapter Not Included

POE-4 PoE Injector 4 Port Passive Mode B Power Over Ethernet Injector - Power Adapter Not Included

Regular price £10.99 GBP
Regular price Sale price £10.99 GBP
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4 Port PoE injector for 802.3af or passive 24 volt devices - Power adapter was sold separately

This 4 port PoE injector that allows for 10/100 data speed on a switch. This injector operates on mode B and can be used to power PoE cameras, IP phones, and access points. This device powers 802.3af devices passively and power is “always on”.


  • Wall mount
  • Use with any PoE or non-PoE switch
  • 802.3af compatible
  • LED power display
  • 10/100 data speed
  • 1mm x 5.5mm DC plug
  • Mode B operation: 7&8 (-) and 4&5 (+)
  • 650 ma automatic resettable fuses on each port
  • Operating temperature: 0°C ~ 65°C

Product Specifications:

  • Size: 180 x 45 x 25 mm
  • Weight: 5 ounces

Other Options:

  • Gigabit option available 
  • 8 and 12 port Gigabit option available 
  • 16 port rack mount 

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      Frequently Questions About POE

      What is "POE"?

      PoE is " Power over Etherenet". A device like this one take DC power and injects on one or both pairs of wire in the Ethernet cable. It's used to power IP cameras, VOIP phones, Wifi Access Points and other networks devices.

      What is the difference between Mode A and Mode B?

      Mode A and Mode B are two different POE pinouts ( the wire pairs used to transmit power).

      Mode matters most if you're powering a 24-volt passive PoE devices like those from Mikrotik or Ubiquiti. These devices always need Mode B.

      If you're powering a devices that has a spec of “802.3af” (48 Volts), them eighter mode A or mode B should work.

      What does passive POE mean?

      Passive PoE means the PoE Injector is always on rather than negotiating with the powered device to turn on and off as need.

      Which power supply do I need?

      The power supply will depend on the specs of the powered devices. Most VOIP phones and IP cameras use 802.3af PoE, which requires a 48 volt power supply. For Wifi, check your device specs for either 802.3af or 24 volt passive.

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