We can use the surge protectors with AHD cameras and IP Cameras. It is coming as single channel or multi channel for AHD Cameras. For the IP cameras, Surge protectors are coming as single. If not we can use a switch inbuilt surge protectors. Some CCTV camera power supplies provide surge protector in the same unit. We have to connect the surge protectors for both ends of Coaxial cable or CAT Cable what we use.