Black and white / color (Network) camera, ball machine, night vision device, low light level camera, black and white / color monitor, display, hard disk video recorder (digital / network), matrix host, video server, lens, optical transceiver, infrared light source, law enforcement recorder, wired transmission device of alarm image signal, wireless video transmission system, picture splitter, distributor, character adder Video intelligent analyzer, disk array, storage management server, codec, PTZ, etc;