Our Selection of NVR CCTV Kits all have the POE (Power over ethernet) function, this means all of the cctv cameras are connected and powered from the back of the recorder using lan (ethernet cables) Although more expensive than their counterpart POC (Power over coax). These better quality IP (Internet protocol) camera kits have a better FPS (Frames per second) picking up more detail within the image and providing crisper clearer images overall.