Recommend a PoE Splitter That Can Output 30W+

C

CaptainCalculon

n3wb
Aug 10, 2022
26
5
Melbourne, Australia
Since the DH-SD6C3425GB-HNR-A-PV1 TiOC 2.0 PTZ PoE+ camera doesn't come with a built-in mic but bare wires for audio input,
I went about and setup an external mic using the following as a template:


When I went onto power on the camera and the mic, I found that the PoE splitter I was using initially wasn't outputting enough power.
The mic switched on, but the camera refused to power on.

This was the PoE splitter used initially: It was absolute rubbish since it also introduced a lot of noise.

Next I tried this one: Output 12V/2A MAX
Standard IEEE802.3 /at(30W)
I am not sure why they falsely rate it as 30W, when max power output is 24W (W = V x I).

After trying another el-cheapo PoE splitter which also fell short on output power, I tried the slightly more expensive Edimax model (GP-101ST):

Again, not enough power.

I had my cabler run a second PoE cable around this camera for a PoE Horn Speaker.
He decided to use this second CAT6A cable for tapping the power from it (using the Edimax PoE splitter) to power the mic.

While the above solution works, I would like to free up the second CAT6A cable for its intended purpose.

TL;DR: Please, I need your recommendation for a PoE splitter that can output at least 30W so that both an external mic and the DH-SD6C3425GB-HNR-A-PV1 TiOC 2.0 PTZ camera can be powered from the splitter's DC barrel plug using a 2-way DC power splitter.
 
CaptainCalculon said:
Since the DH-SD6C3425GB-HNR-A-PV1 TiOC 2.0 PTZ PoE+ camera doesn't come with a built-in mic but bare wires for audio input,
I went about and setup an external mic using the following as a template:


When I went onto power on the camera and the mic, I found that the PoE splitter I was using initially wasn't outputting enough power.
The mic switched on, but the camera refused to power on.

This was the PoE splitter used initially: It was absolute rubbish since it also introduced a lot of noise.

Next I tried this one: Output 12V/2A MAX
Standard IEEE802.3 /at(30W)
I am not sure why they falsely rate it as 30W, when max power output is 24W (W = V x I).

After trying another el-cheapo PoE splitter which also fell short on output power, I tried the slightly more expensive Edimax model (GP-101ST):

Again, not enough power.

I had my cabler run a second PoE cable around this camera for a PoE Horn Speaker.
He decided to use this second CAT6A cable for tapping the power from it (using the Edimax PoE splitter) to power the mic.

While the above solution works, I would like to free up the second CAT6A cable for its intended purpose.

TL;DR: Please, I need your recommendation for a PoE splitter that can output at least 30W so that both an external mic and the DH-SD6C3425GB-HNR-A-PV1 TiOC 2.0 PTZ camera can be powered from the splitter's DC barrel plug using a 2-way DC power splitter.
Click to expand...

Im going to keep this simply because none of the solutions you’re using is going to work. First, what brand and model POE Switch is in use now?

What is the measured VDC at the camera? How long is the cable run and what is the diameter of the Ethernet cable in use?

You could skip all of this heartache by installing a POE Injector that actually provides POE+ / POE++ at the switch. I’m confident that once that POE+ injector is in place both the camera and microphone will operate just fine.

Obviously, I’ll state this assumes the rest of the network infrastructure is sound and meets the most basic requirements!
 
Teken said:
Im going to keep this simply because none of the solutions you’re using is going to work.
Click to expand...

That statement sounds somewhat arrogant. Why?
I have gotten all of the PoE splitters to work with a Reolink PoE (IEEE 802.3af) camera.
Obviously, the Reolink camera is not PoE+ which the DH-SD6C3425GB-HNR-A-PV1 is.


Teken said:
First, what brand and model POE Switch is in use now?
Click to expand...
TP-Link TL-SG1218MP 18 Port Gigabit Rackmount Switch with 16 PoE+ High Power SFP

Power Budget: 250W

Teken said:
What is the measured VDC at the camera?
Click to expand...

Let me get back to you on this one.
I will have to reconfigure everything since the DH-SD6C3425GB-HNR-A-PV1 camera is now powered by a PoE+ cable.

Teken said:
How long is the cable run and what is the diameter of the Ethernet cable in use?
Click to expand...

When it was in the test lab, I used a 5m CAT6A S/FTP 28AWG patch cable.
From the installation location to the patch panel, the cable length is ~ 12m.

Cable used when mounted outside: CAT6A S/FTP Cable w/ PVC Jacket (taken from a 305m reel)
23AWG x 4Pair, 100% Bare Copper


Teken said:
installing a POE Injector that actually provides POE+ / POE++ at the switch
Click to expand...

Completely unnecessary when I know with 100% certainty that the power budget on my PoE+ switch has not been exceeded.
A PoE++ switch/injector is simply overkill for this camera.

The camera powers on and functions correctly via power injection from the TP-Link TL-SG1218MP PoE+ switch.
I have also tried a dedicated PoE+ injector to rule out power budget issues from the switch (i.e. isolation test).

Teken said:
I’m confident that once that POE+ injector is in place both the camera and microphone will operate just fine.
Click to expand...

Nah! The issue is the PoE splitter DC output (not compliant with IEEE 802.3at standard).
This is from all of my testing within the lab.

I am astounded that you are jumping to the conclusion that the PoE+ injector / switch is faulty.
If that was the case, then none of my PoE+ devices would actually work including this camera.


Teken said:
Obviously, I’ll state this assumes the rest of the network infrastructure is sound and meets the most basic requirements!
Click to expand...

Obviously. Otherwise, I would have bigger issues with all of my PoE devices and cameras, and powering an external mic would be the least of my concern.
 
CaptainCalculon said:
That statement sounds somewhat arrogant. Why?
I have gotten all of the PoE splitters to work with a Reolink PoE (IEEE 802.3af) camera.
Obviously, the Reolink camera is not PoE+ which the DH-SD6C3425GB-HNR-A-PV1 is.



TP-Link TL-SG1218MP 18 Port Gigabit Rackmount Switch with 16 PoE+ High Power SFP

Power Budget: 250W



Let me get back to you on this one.
I will have to reconfigure everything since the DH-SD6C3425GB-HNR-A-PV1 camera is now powered by a PoE+ cable.



When it was in the test lab, I used a 5m CAT6A S/FTP 28AWG patch cable.
From the installation location to the patch panel, the cable length is ~ 12m.

Cable used when mounted outside: CAT6A S/FTP Cable w/ PVC Jacket (taken from a 305m reel)
23AWG x 4Pair, 100% Bare Copper




Completely unnecessary when I know with 100% certainty that the power budget on my PoE+ switch has not been exceeded.
A PoE++ switch/injector is simply overkill for this camera.

The camera powers on and functions correctly via power injection from the TP-Link TL-SG1218MP PoE+ switch.
I have also tried a dedicated PoE+ injector to rule out power budget issues from the switch (i.e. isolation test).



Nah! The issue is the PoE splitter DC output (not compliant with IEEE 802.3at standard).
This is from all of my testing within the lab.

I am astounded that you are jumping to the conclusion that the PoE+ injector / switch is faulty.
If that was the case, then none of my PoE+ devices would actually work including this camera.




Obviously. Otherwise, I would have bigger issues with all of my PoE devices and cameras, and powering an external mic would be the least of my concern.
Click to expand...

If this was a serious installation there would be the appropriate sized power wire in place with the Ethernet cable.

There obviously isn’t as such you’re stuck using a band aid solution of a POE Splitter! :facepalm:

Nobody serious in the security industry uses these none safety rated / tested products because they are another failure point. As well as another power consuming piece of equipment.

As you clearly learned none of the junk you purchased (POE Splitters) offer what is advertised!

You could use a real (Pass Through) switch. This would allow you to power the camera. You could then use those cheap POE Splitters in another port to obtain the 12 VDC to power the microphone.

All other solutions require a DC source to power the so called splitter. Given you don’t have a dedicated power wire in place that obviously isn’t a choice.

Ultimately, if you find another POE Splitter and it works now. You’re going to experience a rather hard and expensive lesson because that device will result in best case scenario just failing.

To it taking out your camera, switch, both! :lmao:
 
Were this my camera, I would simply modify its POE board to output DC from its DC power input jack. Some have done this by simply shorting the block diode to permit the reverse power flow. Since the external mics require miniscule amounts of DC power, I use a resistor rather than completely shorting the diode. It's super convenient camera mod because the camera itself then powers the external mic. Course, you'd need someone with a modicum of electronics skill to modify the POE board at the top of camera housing.
 
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Has anybody noticed that the DC input for this camera is for 24 volts?

Capture.JPG
SD6C3425GB-HNR-A-PV1_S0_datasheet_20240327

There are some fairly rare splitters that pass power through to the network output port, but the only ones I've noticed are for 803.2af, and you need 803.2at. You could try something unconventional that has worked for me. Get a passive (i.e. dumb) splitter, plug the camera into one output port, and the poe splitter into the other. Then use the splitter's DC output for the microphone, and don't connect it's network output. I'd expect it corrupts the data stream to some extent. I've got one of these at the end of a 200+' cable, working with no problems. Example: RJ45 Splitter Adapter 1 to 2 Ways Dual Female Port CAT6/5/7 LAN Ethernet Cable | eBay
 
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tigerwillow1 said:
Has anybody noticed that the DC input for this camera is for 24 volts?
Click to expand...

That is a very interesting observation! It probably explains why it wouldn't work when fed 12 volts.

Teken said:
You could use a real (Pass Through) switch. This would allow you to power the camera. You could then use those cheap POE Splitters in another port to obtain the 12 VDC to power the microphone.
Click to expand...

That is what I'd try. Ubiquiti makes a PoE passthrough switch called the USW-Flex that should be able to handle it when fed with a 60 watt PoE++ (802.3bt) PoE injector or switch. Maybe it would work with a 30 watt PoE+ source, but for best reliability I'd want to find a trustworthy 60 watt source. Ubiquiti also makes a 60 watt injector and it happens to be a very good price.
 
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bp2008 said:
That is a very interesting observation! It probably explains why it wouldn't work when fed 12 volts.



That is what I'd try. Ubiquiti makes a PoE passthrough switch called the USW-Flex that should be able to handle it when fed with a 60 watt PoE++ (802.3bt) PoE injector or switch. Maybe it would work with a 30 watt PoE+ source, but for best reliability I'd want to find a trustworthy 60 watt source. Ubiquiti also makes a 60 watt injector and it happens to be a very good price.
Click to expand...

Exactly what I was going to recommend. :thumb: There are more than a dozen other 1st / 2nd tier companies that make reliable pass through switches.

If people go with other 3rd tier to literally no name brands you have absolutely no idea if the output never mind the long term reliability will be there.

Neither the USW-Flex and PSU is expensive and is only marginally higher in price vs a no name brand.
 
Teken said:
Im going to keep this simply because none of the solutions you’re using is going to work. First, what brand and model POE Switch is in use now?

What is the measured VDC at the camera? How long is the cable run and what is the diameter of the Ethernet cable in use?

You could skip all of this heartache by installing a POE Injector that actually provides POE+ / POE++ at the switch. I’m confident that once that POE+ injector is in place both the camera and microphone will operate just fine.







For a reliable PoE splitter that can handle at least 30W, consider the TP-Link TL-PoE150S or Ubiquiti POE-24-30W. Both are known for stable performance and should meet your power requirements for the camera and mic. Buying an essay was a breeze with OxEssays.com The service was amazing! The writer delivered a well-organized, well-researched essay that exceeded my expectations. The process was smooth, and the essay was delivered on time. The quality of the work was outstanding, and I’m very satisfied with the results. This service really made my life easier, and I would highly recommend it to anyone needing help with their essays.
Obviously, I’ll state this assumes the rest of the network infrastructure is sound and meets the most basic requirements!
Click to expand...

Thank you for your help.
 
Last edited:
Here is an idea, Things that I have done when I needed 2 cameras or in your case 2 different POE powered devices on 1 Cat5E cable.. This will require the current cable to be changed from an 8pin setup to a dual 4 pin setup. First one using 4 of the wires to 2 pairs. Then the other end again same pairs to match.. Pins 1.2.3 and 6 are needed to run normal POE and POE+ Then on the second set of wires again going to 1, 2, 3 and 6 matching the other end of colored wires. This take first set and power your POE camera and use the second to power the mic using the splitter for POE to get your 12v output you need..

Just an idea. If you don't have RJ45 crimpers or ends they do sell spitters but they would be needed at both ends and cost much more then just 4 ends changed out on your already installed cat cable...
 
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eu.store.ui.com

Switch Flex - Ubiquiti Store

Flexible 5-port, Layer 2 PoE switch for indoor and outdoor use, that can be powered with PoE++.
eu.store.ui.com eu.store.ui.com

4 out ports with POE+
1 in port, you must deliver one + more (so POE+ to have many POE, POE++ to have many POE+ etc)...
max 46 watts

I used about 10 in different locations.. mostly in full unify network, but switches works without unifi console... very handy..
 
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Revo2Maxx said:
Things that I have done when I needed 2 cameras or in your case 2 different POE powered devices on 1 Cat5E cable
Click to expand...


Nope. That is definitely not what I am trying to do here. Please read the problem statement in my OP.
I am trying to power a 12V outdoor mic by splitting the power from the PoE+ cable run.

It can't be done for this camera as its DC power jack requires 24V for the camera to boot up, which would fry the mic when connected to the DC Y-splitter cable.
 
Sorry you didn't read my post!

I said you split the current POE+ that you are running to your camera. using what I stated and I have setup and even made a Video of doing so.. AS I said.. You are Splitting the WIRE setup from a 8 wire to a 4 wire x 2 there are 4 pairs of wires. take 2 pairs going to 1, 2, 3 and 6 match the other end to the same.. THAT WILL POWER YOUR POE+ Camera.. Then you use the 2 set of pairs and again using RJ45 ends and going to 1, 2, 3 and 6 and match the other end as the same.. Then that plugged into your POE Switch on one end and your POE Splitter for 12v to your MIC. YES it can be done I have done and do it.. you are not using the POE splitter to power the Camera you using RJ45 End just has 4 wires and not 8. 8 Wires are needed for POE++ so if your Camera is a POE++ then yeah my idea won't work..
I have a 24v camera myself that is also POE+ so I had to setup just as I stated so I could power my PTZ cameras Mic as well..
 
Last edited:
CaptainCalculon said:
It can't be done for this camera as its DC power jack requires 24V for the camera to boot up, which would fry the mic when connected to the DC Y-splitter cable.
Click to expand...

One could try the Microseven mike. It runs on 8 to 20 VDC. Current requirements a bit less than 1 mA. A simple resistive voltage divider could be used to drop the voltage to a range of 12 to 16 VDC as the overall voltage requirements are not overly important.

Microseven IP Cameras

The Microseven Cam Outdoor security camera connects to WiFi, POE and can stream 1080p HD video to your phone 24/7. Use it as a surveillance camera or outdoor cam. It's the best way to keep an eye on home.
www.microseven.com www.microseven.com

Have been running a few with DC power warts and Dahua cameras at both 12 and 16 VDC without issue. However, in my installation a separate line is used to power the mikes as the cameras are all POE at 48 VDC.
 
Last edited:
Revo2Maxx said:
Forgive the quality don't have studio or quality video making gear, I post things that I try to help others.. So that is what this uploaded Sept 2021..
Click to expand...


Quality of the video is not bad. I could understand everything.
This is a very nice hack. If this solution can power two PTZ cameras for you, then it will definitely work for powering an outdoor mic after splitting the power from one of the RJ45 plugs.

Revo2Maxx said:
I have a 24v camera myself that is also POE+ so I had to setup just as I stated so I could power my PTZ cameras Mic as well..
Click to expand...

Just out of curiosity, what PTZ IP camera, and which outdoor mic are you using?
 
steve1225 said:
eu.store.ui.com

Switch Flex - Ubiquiti Store

Flexible 5-port, Layer 2 PoE switch for indoor and outdoor use, that can be powered with PoE++.
eu.store.ui.com eu.store.ui.com

4 out ports with POE+
1 in port, you must deliver one + more (so POE+ to have many POE, POE++ to have many POE+ etc)...
max 46 watts

I used about 10 in different locations.. mostly in full unify network, but switches works without unifi console... very handy..
Click to expand...


This is by far the best solution.

Considering the USW-FLEX is already outdoor rated ("weatherproof"), do I still need to look at buying the USW-Flex-Utility kit?

The USW-Flex-Utility comes with a 60W PoE adapter, which would be completely useless for my needs as I need to pair it with a UniFi PoE++ Adapter (60W),
so that the 4 PSE ports can output PoE+ (IEEE 802.3at).

Also, the UniFi PoE++ Adapter (60W) will remain indoors inside the rack, and the PoE++ cable will go through the roof space until it reaches the location of the USW-FLEX on the outdoor wall, close to where all the PoE cameras and devices are to be installed.

Could someone please advise if I have missed anything?


/cc @bp2008
 
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