POE

Chris J LaBoda

Young grasshopper
Sep 7, 2019
57
7
Ohio
The Dahua NVR I am ordering only supplies 8 ports for POE and I will be running 9 cameras. I see that the Dahua cameras specify 12V, can I use any POE injector? From what I have read the device connecting to the POE injector determines what POE voltage it will use.
 
If you are ordering an 8 channel NVR, then you wont get the 9th camera to work.
NVR channels >= number of cameras
 
The Dahua NVR I am ordering only supplies 8 ports for POE and I will be running 9 cameras. I see that the Dahua cameras specify 12V, can I use any POE injector? From what I have read the device connecting to the POE injector determines what POE voltage it will use.

Hi @Chris J LaBoda

So you're ordering an NVR with 8 PoE ports.

How many channels?
 
Use a POE switch on the network. It supplies ~48 volts to the camera, same as the POE ports built into the nvr. The 12 volt camera power input is for when it's on a non-poe network connection.
 
What is the model number of the NVR.

Use a POE ethernet switch that supports 802.3 at. Or 802.3 at.
 
None of them are EPOE so you're good to go just with the nvr POE ports to power up the nine cameras
 
None of them are EPOE so you're good to go just with the nvr POE ports to power up the nine cameras
To clarify even if they cameras were epoe they would work just fine just as they do with standard poe switches... You just don't have the extended distance
 
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