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EnGenius NPE-4818 48V Power-over-Ethernet (PoE) Injector

  • NPE-4818
  • PoE Injector

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  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the EnGenius Technologies NPE-4818




PoE Injector


Transform AC power to 48V DC power

Inject 48V DC through CAT5 cable, pin# 4,5,7,8 into remote devices such as wireless AP, web camera, or IP phone

Output: 48V / 0.375A

Follower 802.3af standard power pin definition

RJ45 connector and pin out
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the EnGenius Technologies NPE-4818

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  • Greg F.
  • 9/29/2011 12:49:13 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsWorks with Mitel

Pros: They work flawlessly with Mitel 5312 IP Phones.

Cons: none

Other Thoughts: They're cheap and they insert the proper voltage on the proper wires... what more do you want?

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  • Anonymous
  • 4/1/2008 8:13:13 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsGood PoE injector for low price

Pros: Cheap and uses the standard for PoE. Worked well over our 220+ foot run as well. (It powers a bridging Netgear access point that has a high-gain [12 dB] antenna on it.) Also has a very easy-to-see red light for indication purposes.

Cons: There are no holes on the back for mounting. Kind of a shock for me, as I needed to mount it to a board for the project I'm using it in, but not a big deal; A bit of masking tape did the trick for now. Metal braces are going to be the permanent solution.

Other Thoughts: Good product, and haven't noticed any reasons not to get it again. (Actually will be using it again for when we put in the 4th bridged access point. This one will only need to do a 30 foot run though. :-P)

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  • Anonymous
  • 3/29/2008 8:43:29 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day

4 out of 5 eggsWorks with Linksys SPA942 IP Phone

Pros: Works with my Linksys SPA942 IP desk phone. Low cost.

Cons: Does not appear to sense if device is connected. I tested with a multitester and found it was putting out 48v at all times across pins 4/5 and 7/8. Be careful what you plug into these.
Large power brick... blocks outlets.

Other Thoughts: These are the same midspan injectors that are included with the EOC-3220 access points.

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