Right, heres the situation. We have a few IP cameras but to put them where we want to put them, we have to install an electric socket. Now, i have been told that we can buy a Power Over Ethernet injector and IP cameras that support POE. I have attached an image to help explain what i want to do.
Is it possible??
If you look at the cost and time getting someone to install a few sockets around school, buying a PoE switch is much better value for money.
It also allows you to buy additional cameras (as and when needed). I use HP switches and I recently installed a HP J9086A. 24 ports which 12 are PoE compatible. The end product looks very neat and tidy as you just have an access point or camera and a single ethernet cable. No adapters.
Ahhh, and how much are PoE cameras.. we dont need anything too good.... as we have got these already... and are fairly happy with them... http://www.linksengineer.com/Admin/N...c2d33d0c79.jpg
Cheapest PoE camera I can find is £175 ex VAT which I think is perfectly reasonable
What make are those??
Next question, does anyone know any decent but cheap recording software for IP cameras?? I am trialing Blue Iris at the mo, its ok, but am liking go1984 better. The only problem is blue iris is $50 and go1984 is $499
Actually I've found even cheaper. I suspect some of these cameras will come with their own software (I would of thought).
Edit: The £175 ex VAT was a Linksys PVC2300.
Last edited by Michael; 27th November 2008 at 11:08 AM.
Cheers!!! Will have a look at those..
Is it possible to get multiport PoE switches (im having a look on the net) which have about 2 - 3 ports.
Yes HP do an 8 port one in the 2600-pwr-8
Make sure the cameras you buy are within limits to what the switch can provide. From memory I think it's 15W per port on HP's.
HP do 8, 12 and 24 port PoE switches.
Just chipping in to point out that you don't have to buy POE-enabled IP cameras to use Power Over Ethernet.
As you'll have spotted POE-ready cameras cost more. You need to purchase a POE injector to 'inject' power onto the network data cable and carry it to the camera.
If the camera is POE-enabled the RJ45 network plug (still carrying the power and the data) plugs directly into the camera and the internal electronics splits-out the power and data inside the camera.
However, there is nothing to stop you using a POE power injector in conjunction with its partner device known as an Active Splitter. The active splitter sits at the device end (alongside the camera, wireless access point, etc) and separates the power component from the data.
One data cable arrives at the Active Splitter, carrying power and data. The Active Splitter then provides two separate cable outputs; one for power, one for data. You can then use an ordinary camera as it is receiving power and data in the usual sockets ...
This POE injector/splitter pair is really quite cost-effective and we've used it many times with non POE-enabled cameras such as the little Axis 206 and 207 models, just make sure that it can output the right voltage for your requirement (this unit provides switch selectable 7.5, 9 or 12 VDC).
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