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Black rectangular PoE injector with two RJ45 ports and wall plug

JacobsParts Inc.

JacobsParts Inc. POEINJ-A 12V 2A 24W 802.3af Passive PoE Injector power adapter

SKU CH-SF38-M7H2C

Adds 12V 24W passive PoE power over Ethernet for IP cameras, phones and access points using standard Cat5, Cat5e or Cat6 cable

  • TypePower Supply
  • ColorBlack
  • Connector StyleRJ45
  • Dimensions3.66 x 2.83 x 2.05 inches
  • Weight3.52 ounces
  • Delivers power and data over one Ethernet cable using passive 802.3af mode B
  • Simplifies installation of IP cameras, phones and wireless APs with a single cable run
  • Connects to a standard 120V wall outlet for immediate use
  • Works with Cat5, Cat5e and Cat6 Ethernet cabling
  • Compact 3.66 x 2.83 x 2.05 inch form factor fits tight spaces

JacobsParts POEINJ-A 12V 2A Injector

This passive Power over Ethernet injector combines data and 12V 2A power onto a single Cat5, Cat5e or Cat6 cable. It suits installers adding IP cameras, wireless access points or VoIP phones where no local mains socket exists. The unit plugs into a standard 120V wall outlet and delivers 24W through the spare pairs of an RJ45 link. It is built for indoor use with a compact black enclosure.

Upgrade from separate power supplies

The injector replaces an individual wall wart and a separate data run for each powered device. The jump is worthwhile when cable routes are already in place and you need to add PoE capability without fitting an active switch. It supports 100Mbps Ethernet data on pins 1, 2, 3 and 6 while power rides on pins 4, 5, 7 and 8 in mode B. Devices that require active 802.3at or 802.3bt negotiation will not start up with this adapter.

Check device voltage and pin-out

Confirm the target equipment accepts 12V passive PoE on the spare pairs before ordering. The injector provides always-on power on pins 4, 5 positive and 7, 8 negative with no handshake. Verify the Ethernet cable length stays within 100 metres for reliable data and voltage delivery. Ensure a 120V mains socket is available at the injector location.

Highlights

  • Delivers power and data over one Ethernet cable using passive 802.3af mode B
  • Simplifies installation of IP cameras, phones and wireless APs with a single cable run
  • Connects to a standard 120V wall outlet for immediate use
  • Works with Cat5, Cat5e and Cat6 Ethernet cabling
  • Compact 3.66 x 2.83 x 2.05 inch form factor fits tight spaces

Specifications

BrandJacobsParts
ModelPOEINJ-A
TypePower Supply
ColorBlack
Connector StyleRJ45
Dimensions3.66 x 2.83 x 2.05 inches
Weight3.52 ounces

Questions about this item

How much clearance do the 3.66 x 2.83 x 2.05 inch dimensions need behind a wall outlet?

The injector measures 3.66 x 2.83 x 2.05 inches, so allow at least that depth plus cable bend radius behind the socket.

Which RJ45 port connects to the switch and which feeds the powered device?

One RJ45 is the standard Ethernet data input from the switch; the other provides passive 802.3af mode B output with power on pins 4,5 and 7,8.

Do the RJ45 contacts or the AC prongs wear out first with daily plug cycles?

The AC prongs and RJ45 jacks are rated for typical insertions; no user-serviceable parts exist, so replace the whole unit if a port becomes intermittent.

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