First post, but I've been reading for awhile. Thanks for all the good info.
I picked up a KTC N600 camera recently:
http://www.ktnc.co.kr/product_02_06.asp
It comes in a 12V DC and 24 AC type, and I bought the 12V version. Hooked it up to my 12 supply and everything seems to work fine.
Today I suddenly noticed that the box the camera came in says 24AC, and on second look there is a tiny sticker on the camera power cable that says 24AC only. So it looks like I was shipped the wrong camera.
Given that it seems to work, is there an automatic switching circuit in the camera that adjusts for the supplied voltage? Am I doing some harm by delivering it DC? It seems to work just fine. I could ship it back, of course, but that will be a 2 week turn around time, and I want to go ahead and mount it.
thanks,
Nishan