Required poe or power supply specs

Ollie

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Hi,
I would like to buy a single injector for a Dahua cam (5442 - IRE - not led).
This is the voltage and consumption specs:

Power SupplyDC 12V (±30%), PoE (802.3af) (Class 0)
Power Consumption<7.2W
I'm not sure about the required poe injector to buy.

It should be <7.2W, so 12v/1a will be good?
Should i consider the power (W = U x I) only while getting any combination of amper and voltage?
Thanks.
 

wittaj

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You are over thinking it or looking at cheap crap LOL

You need to get one rated at POE 802.3af, but the price isn't too much more and I would go with one that is POE 802.3af/at in the event you ever upgrade to a PTZ.
 

Ollie

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You are over thinking it or looking at cheap crap LOL

You need to get one rated at POE 802.3af, but the price isn't too much more and I would go with one that is POE 802.3af/at in the event you ever upgrade to a PTZ.
Yes, the first option - cheap crap...
Not recommended, i guess.
But in general - not for poe only - what is the relevant power supply spec to be used with this camera? (Assuming it has a power cable of about 3 feet - 10m and connected to a single cam) - what is the required current?
 

wittaj

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If you are using POE, you don't need to worry about current and what not. POE 802.3 is a standard. Get a POE power supply that meets that standard. Anything else and you risk burning up the camera.

POE is rated to go up to 328 feet.

If you are not using POE, then you need to get whatever power VDC the camera requires. Usually 12VDC.
 

TonyR

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Jessie.slimer

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If you think you may ever be adding more cameras, you also might want to think about getting a poe switch instead. For maybe double the price of a single injector, you can get a 4 or 6 port poe switch. Just a thought. Cameras are addicting.
 
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