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Small black rectangular PoE injector with two RJ45 ports and integrated wall plug

JacobsParts Inc.

JacobsParts POEINJ-C 48V .5A 24W Passive PoE Injector power adapter

SKU CH-5D55-9YD91

Delivers 48 V passive PoE at 0.5 A over a single Cat5/6 cable for IP cameras, phones or WLAN access points

  • 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 deployment of IP cameras, phones or WLAN access points with a single cable run
  • Connects directly to a 120V wall outlet with no extra power supply needed
  • Works with standard Cat5, Cat5e or Cat6 cabling for flexible installations
  • Provides two RJ45 ports for 100Mbps data input and always-on power output

Power Over Ethernet Injector

The JacobsParts POEINJ-C is a passive PoE injector that merges 48V .5A power with 100Mbps Ethernet data onto a single cable. It targets installers who need to power IP cameras, wireless access points, or VoIP phones without running separate AC lines to each device location.

Sustained Operation

The adapter draws from a standard 120V wall outlet and delivers a constant 24W through the spare pairs of the Ethernet link. Because it uses passive mode B pinout, power remains present on pins 4,5 and 7,8 regardless of data traffic, so connected endpoints receive uninterrupted supply during continuous operation.

Pre-Installation Checklist

Verify that the powered device accepts passive 802.3af mode B wiring on the spare pairs before connecting. Confirm the site cabling is Cat5, Cat5e, or Cat6 with all eight conductors intact, and ensure the injector’s two RJ45 ports align with your data source and endpoint placement.

Highlights

  • Delivers power and data over one Ethernet cable using passive 802.3af mode B
  • Simplifies deployment of IP cameras, phones or WLAN access points with a single cable run
  • Connects directly to a 120V wall outlet with no extra power supply needed
  • Works with standard Cat5, Cat5e or Cat6 cabling for flexible installations
  • Provides two RJ45 ports for 100Mbps data input and always-on power output

Specifications

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

Questions about this item

How much heat or noise does the 48V .5A 24W passive PoE injector produce when running continuously?

The injector has no fan and no moving parts, so it runs silently; its 24-watt output generates only modest warmth that is dissipated through the plastic case.

What Ethernet cable and powered device must I already have for the POEINJ-C to work?

You need a standard Cat5, Cat5e or Cat6 patch cable and an 802.3af passive PoE-capable device such as an IP camera, VoIP phone or wireless access point that accepts power on pins 4,5 and 7,8.

Will the injector’s 100Mbps data pass-through limit a gigabit switch or router I keep in the same network?

The injector passes data at 100 Mbps on its RJ45 ports, so any link running through it will negotiate to 100 Mbps; gigabit ports elsewhere on the network are unaffected.

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