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Features:
1． Support 4 channel CIF realtime compression (with audio), 4 channel CIF network 

        transmission, and 1 channel CIF decompression (with audio) simultaneously;
2． Friendly GUI；
3． Adopt H.264 compression format, which is the high ratio compression format, and keeps 

       the high resolution image. The audio compression is ADPCM or G726;
4． Support 1 build-in SATA HDD, unique HDD management technique with automatic

         dormancy feature and good durability.
5． 1 USB connector that allows USB device connection;
6． Support 4 channel MD (Motion Detection);
7． 4 channel alarm I/O input, 4 channel relay alarm output;
8． 4 channel PTZ control;
9． Support VGA output;
10．  Perfect alarm linkage recording and alarm linkage output;
11．  Bidirectional voice-communication function;
12．  Support PPPOE, IP report function;
13．  Support network upgrade and USB stick upgrade of firmware;
14．  2 user-level management system;
15．  Controllable alarm output power added;
16．  Automatic on/off; auto-recover when re-supply of power after power cut; video loss alarm;
17．  Complete alarm log and operation log, convenient for user analysis, inquiry and 

         management;
18．  Support 10M/100M Ethernet interface. Can set device parameter, download recorded 

         video, or control the device remotely via IE browser or client software;
19．  Can link in to our large scale network surveillance platform with ordered DVS, IP Cameras;

         suitable  for peaceful-city construction project that need the anterior storage devices;
20．  Suitable for small scale surveillance spot, such as small bank site, village, home, store, etc.