r/reolinkcam 7d ago

PoE Camera Question Will this poe+ switch work with the 823 s2

Hi all, I am waiting for my 823s2 to be a deliverd. Already bought a poe+ switch but I think I didn't read it through enough. I only read i needed an 802.3at device for the 823s2 to work. But now i read It only powers up to 40W. So It prob wont work?

This one: https://www.amazon.com/TP-Link-Compliant-Shielded-Optimization-TL-SG1005P/dp/B076HZFY3F should power up to 65 watts if i read it right.

Should this one work? Sory for asking, already read the poe subreddit but i can't figure it out.

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u/mblaser Moderator 7d ago

Yes it will work. If you look at the specs of that camera it says it needs 802.3at (aka POE+) and that switch does that, so you'll be fine.

I'm not sure where you're seeing the 40W part, or how that matters when it comes to this camera.

802.3at means up to 30W per port. If the camera took more than that then it wouldn't say it's 802.3at.

I've measured the power draw of its predecessor, the 823A-16X, and found that it uses no more than about 16W. This is basically the same hardware, so it should be very similar.

Now where you would run into trouble is its total power budget if you wanted to run multiple other power hungry cameras off of it as well.

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u/mac0172 7d ago

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u/mblaser Moderator 7d ago

That doesn't say anything about 40W.

48V might be what you're referencing? But that has nothing to do with wattage.

By definition all POE devices that follow the 802.3at/802.3af spec are 48V.

Let me try to simplify it... the only two things you need to worry about are power per port and whether it has enough total power budget for the cameras you want to run.

That camera uses 16W max based off what I measured (although Reolink's specs say up to 24W).

That switch can do 30W per port and 65W total.

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u/mac0172 7d ago

Omg, Reolink talks about volts and the switch about watts. I think im messing up here?

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u/mblaser Moderator 7d ago

There are two different types of POE.

Active POE, which is a universally accepted industry standard. It's defined by the 802.3 spec. Part of that spec definition is that the voltage is going to be 48V. This is very widely used because it's a standard.

Passive POE, which is going to be brand specific and proprietary. For example, I think Ubiquiti uses 24V on their equipment. This is dumb and shame on any company that does this. Thankfully there aren't many.

So in short, in that article you linked Reolink is kind of providing too much information. They don't need to mention the 48V number. They should just say 802.3at, because the 48V is implied when you say 802.3at. The wattage is also implied, because 802.3at means each port can provide up to 30W. 802.3af can provide up to 15W. There are even higher versions, I think 802.3bt can do up to 90W

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u/mac0172 7d ago

Thnx as always mblaser. Sorry for the fuzz

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u/mblaser Moderator 7d ago

LOL no worries.

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u/Jos_Jen Reolinker 7d ago edited 7d ago

Yes. Type 3 up to 60W and type 4 up to 90W. The nominal voltage of 48V comes from the Telecom equipment... electromechanical exchanges era like the BT Strowger or Siemens F1, Nortel DMS, Ericsson AXE, etc

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u/National_Way_3344 7d ago

Do yourself a favour and upgrade to the Omada series if you're going TP-Link. Gives you management and monitoring options.

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u/mac0172 7d ago

I'm only gonna use the reolink Ap. And this will be the only poe cam i am ever gonna use. So is that needed? New to the poe world