DH-IPC-HFW13A0SN-W 3.6MM

camerafool

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Started testing Dahua DH-IPC-HFW13A0SN-W 3.6MM security camera.

1. Is not POE. Tried plugging to two functioning POW switches and the LED never lit. Not a problem cause I bought this to run on 12 volt supply line and wifi.
2. Tested the minimum voltage and found it will run at room temperature at least down down to 10.5 volts while connected to wifi.
 

Fastb

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Welcome camerafool, on your first posting!

I'm not sure what you question/problem is....
1. Correct. The spec sheet shows that camera does not have poe.
2. Interesting. But why are you curious about the minimum operating voltage?

The spec sheet says power is "12V DC ±25%" So spec-wise, it should run from 9V too 15V

Fastb
 

camerafool

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Welcome camerafool, on your first posting!

I'm not sure what you question/problem is....
1. Correct. The spec sheet shows that camera does not have poe.
2. Interesting. But why are you curious about the minimum operating voltage?

The spec sheet says power is "12V DC ±25%" So spec-wise, it should run from 9V too 15V

Fastb

I was just posting my findings.

Camera was purchased from BHPhoto and it is listed there as "12 VDC ± 25%, PoE 802.3af Class 0". Maybe "Class 0" means not actually POE. My time is limited and although I appreciate persons that turn security cameras into hobbies, I've got limited time available to research every gotcha specification.

Long runs of thin conductors experience significant voltage drop. I'm going to power this with a run of landscape cable and wanted to make sure I didn't need an extra cost adjustable power supply and/or thicker gauge cable.
 

Fastb

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camerafool,

Maybe BHPhoto made a mistake in the camera description.
Here's the official spec sheet from Dahua: http://www.dahuasecurity.com/en/us/pro_details.php?pid=1294

In "Network" section, POE isn't mentioned
Ethernet: RJ-45 (10/100 Base-T)

I started with a WiFi camera, and ended up with many dropouts, requiring a cycle power to make the camera reboot. I eventually replaced the power cord with a cat5 cable, and turned off the WiFi.
I used POE power splitter to get the 12V to power the camera.
Amazon.com: ELEGIANT Power Over Ethernet POE Splitter 12V 2A POE Adapter For IP Cameras: Computers & Accessories
Summary:
48V poe down the "thin conductors" to the above power splitter.
Making 12V from 48V (or less, depending on length of run) means a good solid 12V is provided to the camera.
(use cat5 cable that is solid copper, not CCA)

Long runs of thin conductors experience significant voltage drop.
The voltage drop is dependent on current. More current, more voltage drop.
The spec sheet shows:
Power Consumption: Max. 5.5 W (12V DC, IR On),
Watts = current * V
5.5w = current * 48V
Current = .12A
That''s not a lot of current! (I ignored POE power splitter inefficiencies)

using 15ohms/100M (typical CAT5)= 15ohms there, 15 ohms back, so 30ohms total
V drop =A * R
V drop = .12A x 30R = 3.4V
So 48V poe drops to 44.6V for a 100M run.
POE powered devices, according to the 802.3at and af specs, must function with poe down to 37V

I understand you don't the luxury of researching all this. So I laid it out for you.

My recommendations:
  • Don't use wifi. Many here say the same thing.
  • use the poe switches you have
  • run Cat6 cable, not landscape lighting cable
  • Use a poe power splitter at the camera to create a 12V supply
  • You'll have a robust connection & operation

Fastb
 
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camerafool

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I'm well aware of wifi pitfalls. I have 15 wired cams running on Blue Iris using Cat 6A cabling. Wifi camera is only experimental for possible mailbox installation. I wouldn't have bought a wifi camera if I was going to run ethernet cable under front yard sod. Only problem with no POE was ease of setup, as I had to rustle up a power adapter instead of just plugging into switch.

Am not looking at settings at this moment, but I believe the Dahua camera settings have a schedulable auto reboot function.
 

Fastb

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You're welcome.

Seems you have a vision and the answers.

Good luck
 
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