DVR(Digital Vedeo Recorder) system is a digital video recording and transfering system. Analog CCTV was not able to remote supervise, search, backup, and camera control, etc. But DVR makes possible these works, it always monitors the site, records, and search arcording to time, date, each camera, event by cameras installed in the place needs physical security.
Until 90s year, it was general to install analog security devices in unit bulding. So indurable analog system and main parts caused eplacing cost periodically. As system scale grows, it cost more money and it was impossible to supervise the site camera placed in remote place by analog system.
But DVR is a high stability digital system. DVR Decreased cost to record data in HDD and maintain devices and made possible remote total security supervise system construction which was impossible with analog system.
Camera -DVR connection is direct one with BNC cable and it adopt GUI (Graphic Users INterface) in PC monitor and CCTV camera, so customers can construct digital security system anywhere - public office, aprtment, warehouse, shoppingmall.
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