Features a monitor, you can monitor the image content stored in the hard drive, burn discs or saved in backup storage device, as the use of archives. 2, to overcome the shortcomings of many body functions, such as: monitoring equipment can work uninterrupted 24 hours a day. 3, can be achieved and other security alarm system linkage, timely discovery danger progressive interlaced monitors and monitor what's the difference? Mainly refers to interlaced and progressive scan CRT monitor mode. Interlaced monitor has the image quality is poor, low-resolution, image flicker noise Japan and other serious shortcomings. Because of the progressive scan input signal into a digital video signal by A / D conversion and then decoded by a digital image processing circuit and the digital horizontal and vertical scan processing monitor maintenance charges, channel bandwidth greatly enhanced (up to 10MHZ-20MHZ), clarity is greatly improved, greatly reducing noise monitoring maintenance, while progressive display eliminates the line spacing between the lines and line flicker, but the frame rate of increase (eg 60HZ-85HZ) is to reduce or eliminate a large area of ??the image flicker. After monitoring the line frequency but increase maintenance, line output level of stability and reliability will be severely tested, so the overall design and manufacturing costs greatly increased, and therefore the whole of the price is higher. Security monitoring maintenance _ _ source monitoring maintenance maintenance provided by Zhengzhou source maintenance Electronic Technology Co., Zhengzhou source maintenance Electronic Technology Co., Ltd. (www.hnxywb.com) strong, credible, in Zhengzhou integrated monitoring systems and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead source maintenance and you work into the brilliant, for a better future!