Cisco Power Injector - AIR-PWRINJ4

Unanswered Question
Jan 8th, 2013

                   Hi there, I have a quick question about Cisco Power Injector.

                    we bought a number of Air-PWRINJ4 year ago,  mainly for extending the power via Cat5 ethernet cable to AP 1225 in warehouse. the output is 56V 0.55A. 

                    Now I have a couple of spare left, my quesiton is if it is OK to directly power 3502I AP, which requires imput 48V and .35A. from the bag of Air-PWRINJ4, it indecates that the 3500 series is also included.

I have this problem too.
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Scott Fella Tue, 01/08/2013 - 22:38

I wouldn't, since the 1252 injectors supply more voltage than required.

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ciscoroyzhang Wed, 01/09/2013 - 17:28

HI Scott, thanks for the reply,  I have tested it works fine, but what will happen if we plan to use it for long run, does it will demage the APs?    in the packaging bag it says: Power Injector - AP 1140/1250/1260/3500 Series - SPARE

on the site I am setting up the AP, there is no POE switch and I don't have adapter with exact output for APs.

Scott Fella Wed, 01/09/2013 - 18:00


If it didn't blow up when you connected it, then it will be fine. I'm guessing there is something that must be regulating the power output. Again, you should be fine.

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Leo Laohoo Wed, 01/09/2013 - 00:02

You have no choice.  You either use the PWR-INJ4 (20.0w) or wait for the release of the PWR-INJ5 (15.4w).

Another option is here.


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Posted January 8, 2013 at 9:34 PM
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