1. MPEG4 video compression, a higher compression ratio, the more efficient hard disk space;
2. Image Format CIF/Half D1/D1 three options;
3.4-channel synchronization of video and 2-channel audio compression;
4.4-channel input and 2-channel alarm output;
5. Pre USB 2.0 and audio&video output;
6. Support hard disk which more than 300G;
7. Table inquiry, time inquiry and precise inquiry, many inquiry ways;
8. Built-network function, TCP/IP protocol, support client software;
9. Support goes mirror control, equipped with infrared remote control
10. Graphical user interface, operate more convenient.

Specifications and parameters
Compression Standard: MPEG-4
Video Signal: PAL/CCIR, 625 line, 50 field / sec
Video Input: Composite Video: 1.0V p-p/75 ??, BNC connector x 4
Video Output: Composite Video: 1.0V p-p/75 ??, BNC connector x 2
Audio Input: RCA linker x 2
Audio Output: RCA linker x 2
Alarm input: Non-voltage contact closure, always open or closed, 4-channel input
Alarm output: Non-voltage contact closure, always open, 2-channel output
Alarm: Alarm sensor input; Video detection alarm; Video loss alarm; Disc full warning
NETWORK: Adaptive 10/100M Ethernet port, and ADSL support LANWAN dynamic IP networking (selection)
Backup mode: USB Backup, Network Backup, Disc Backup
Tell rates: Resolution: 704 x 576 shows
CIF 352 x 2881/2D1 352 x 576D1 704 x 576
Image resolution: CIF 2881/2D1 352 x 352 x 704 x 576 576D1
Hard Disk: One IDE interface; Support two large hard disk over 300G
Electronic Clock: Year / month / day / hours / minutes / seconds
Power: DC12V5.0A/50Hz
Power: 40W (no hard disk)
Temperature: Operating temperature: +5 ~+50 deg; Humidity: Less than 90%
Storage temperature: -20 ~+70 deg; Humidity: Less than 95%
Size appearance: 310 x 45 x 280mm