NV8000HC series network disk video recorder is an excellent digital surveillance product , using the most advanced technology in information industry such as video/audio encoding/decoding , hard disk record and TCP/IP . It has both features of digital video/audio recorder(DVR) and digital video/audio server(DVS) . It can work stand-alone or be used to build a powerful surveillance network, widely used in bank, telecommunication, transportation, factories, warehouse, irrigation, ect.