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DS-9000HWI-ST series HDVR (hybrid digital video recorder) is a recorder developed by Hikvision independently which can both connect analog and network cameras and provide powerful surveillance. Combined with multiple advanced technologies, such as audio and video encoding and decoding technology, embedded system technology, storage technology, network technology and intelligent technology. It can both work alone as a recorder and cooperate with other devices to build a comprehensive surveillance system. The DS-9000HWI-ST series HDVR are widely applied in the areas of finance, public security, military, communication, transportation, education, etc.