I have an IP surveillance camera that is going to be located about 100' from router. It does NOT support POE. However, I am looking to use a cheap off the self POE injector to add DC through the cat5, then a POE splitter to separate the data and and connect the to the DC input on the camera. The camera has a 12V 1a AC-DC adapter.
So, I am trying to figure out what kind of voltage I need to input to have 12v/1a available to the camera at a 100' distance over cat5(24awg). A simple calculation that I can use to make adjustments if I have different lenghts would be helpful.