thewireguys 3 Posted June 10, 2010 All you need is a IEEE 802.3af compliant POE injector and you will be fine. The camera takes 6.5 watts with the IR on POE. Also please check the link in my signature I have 3 of them forsale at great pricing with a NVR. Share this post Link to post Share on other sites
Soundy 1 Posted June 10, 2010 Well, that's 19.2W... stepped down to 12V (and assuming 100% efficiency, granted), that's 1.2A available. Can you please make it more simple for me, i didn't understand your explanation... The camera uses 12V so if i have a48V injector output with 400mA the camera takes only when it needs ? Any electrical/electronic device will draw only as much current as it requires. 400mA is the *maximum* the injector can provide at 48V. Since the POWER remains constant (again, assuming 100% efficiency, which is impossible in the real world, but is what we usually deal with for the sake of keeping things easy), as the voltage changes, the available current changes inversely-proportionally. Given that Power = Voltage times Current (P=VI), that gives you 48V * 0.4A = 19.2W. Step it down to 24VDC, you'd have up to 800mA available; at 12VDC, you get up to 1.6A (sorry, calculated wrong above). Share this post Link to post Share on other sites
omer78 0 Posted June 11, 2010 Dear friend, thx for braking it down for me, now i fully understand. Have a wonderful weekend !!! omer Share this post Link to post Share on other sites
