darikweitzel

I been searches for days for an answer and can not get a solid one. The question is... Can I use my mikrotik 24v poe to power my 12v ip poe camera? The ONLY specs this camera gives me is that the power rating is 12v +-10v. It doesnt say if it "ip camera" meets the IEEE standards or not. The POE does meet the standards however. I am just worried that the poe 24v will burn out the device. I hear both ways, voltage is voltage and will burn out my device if powered and also it wont burn it out because the camera will do a hand shake with the poe to determine the resistance. What are your thoughts before I just "test" it out. Here are links to what I am working with. POE- http://store.l4networks.com/poe-24i-24-vdc-power-over-ethnernet-supply-injector/ IP Cam- http://www.gw-security-camera-system.com/Camera-Aptina-Megapixel-HISILICON-Hi3518C/dp/B00K7J1RC4

Got my cam back and still cant power my cam with a change in configuration of my ethernet. Not sure why it still wont work.... My cam power pins are 12+ and 36-. My poe injector is pins 45+ and 78-. What i did with my ethernet cable was wired poe side of pins= 1.wo 2.o 3.wg 4.bl 5.wbl 6.g 7.wbr 8.br and camera side of pins 1.bl 2.wbl 3.wbr 4.wo 5.o 6.b 7.wg 8.g does this look like how I should wire it to make that poe injector power the cam?

So I have found possibly why it wasnt working after all this time. I still have not received my cams back yet but its in the mail. After GW Security could not help me, I finally found what pairs they send power on. Their cams and poe switches/injector use pairs 1236 for powering and 4578 for data. This was why non of my injectors would work because my injectors used pairs 45+ and 78-.

I may end up trying this out actually. I sent the cam to the manufacture and also sent in my poe injector with 12v power supply so they can test it out. They state it should work without any issues. They are suppose to let me know also what pairs the voltage rides on as well incase I just need to swap pairs around to power the cams. I know Mikrotik uses I think pairs 4,5 positive and 7,8 negative. The cam doesnt state what it uses. If all else fails, I will just wire the pos-neg from the cat5e to the female plug of the power supply and plug into the cam.

I guess I dont understand what your saying from what I know already. I have used 12v,18v, and 24v and non will power the device. It is a 802.3af compliant injector along with the cams I am using I assume"waiting to hear back still". You say that "MikroTik uses a 24VDC input voltage and calls it POE, which is pretty dangerous in my opinion. I have seen people plug in 802.3af compliant switches to these devices and kill them instantly. I wish they would stop doing this stupid stuff and follow the standard!" but why would someone plug switches into injectors? Also the 24v etc is a output voltage not a input voltage. Kind of lost with these 2 posts. I am however still wanting input from you that can help me and possibly others as well.

tried a poe switch and still doesnt power the cams. I wonder if the power wiring is different on the cams. Anyone know how I can find out what the wiring is for the cam without going through the manufacture? I talked to them and havent a response back yet.

I may just ending up getting a poe switch. I contacted the manufacture and they stated indeed its true poe. They said that all the poe injectors I tried should have worked regardless the voltage. They are unsure why it doesnt power up the cam. I told them I had 2 cams and both do the same exact thing. Tried 12, 18 and 24volts and nothing. I guess my next try will be a switch. maybe that will do the trick. I wish I could just test it on something before buying a poe switch. I will keep you up to date on what I find out.

When you say regular poe switch or injector; what is that. Do I look for voltage or just any unmanaged switch that says it can power through ethernet? yes, I am finding it even harder to find anyone with this cam that powers it via POE. I am starting to think that maybe its NOT POE compatible at all. Can someone do research for me to find out if in fact this cam can be powered by ethernet? I did find this-- http://www.neweggbusiness.com/product/product.aspx?item=9b-0y0-006z-000e1 which is a NVR they power their cams with perhaps? Any help is useful as I am out of ideas. I dont want to invest more money to find out it can not be powered by POE.

So I hooked up a 24v and a 18v POE24i and POE18i POE Adapters to my POE Cams and they dont even turn on at all. So my assumption is that it detected the wrong voltage and safety reasons it told it to not send any voltage at all. So the next thing is do I purchase a POE switch and what do I get to make sure it will power my cams? note- it did not wreck the cam at all which I am thankful for.

I guess the site where I bought the POE Camera says it is POE optional. So I would assume it IS indeed POE. The voltage is throwing me off and hate to burn out a 100$ camera. So pushin 24v into a 12v cam via POE it will indeed not hurt the cam?

the camera is ment for 12v not 48v from what all I have read. So I would assume the DC12v 1.5amps transformer I am currently using would be the same usage the camera would take away from the POE correct? But if I am pushing 24v to the camera; does the poe talk to the camera to determine the correct volts so it cant hurt the cam?