Video input: 8 Channels PAL, NTSC (BNC port, 1VP-P,75ohm)
Video output: 8 Channels PAL, NTSC A composite video output(BNC port,1VP-P,75ohm)
One VGA output(frequency:60HZ,resolution ratio: 1024*768)
Parameters of audio
Compression arithmetic: video compression H.264 CIF (PAL 352*288 NTSC 352*240; audio compression G.722
Image resolution ratio: real-time display (PAL 704*576 NTSC 704*480),VGA display (1024*768)
Audio sampling ratio: 8K sampling point per second, 16 bit per sampling point
Operating system: Embedded real-time operating system (RTOS)
Hard Disk: Support 2*SATA
Alarm ports: Alarm input: 4 alarm input/Alarm output: 2 alarm output
IO port: RS-485/RS-232; RS-485 supports transparency channel which can be used to control device by network
        PS/2 interface for keyboard and mouse; support to connect serial keyboard
Backup: Provides USB 2.0 backup interface on front and back of DVR for hard disk, CD-R or DVD-R, supports backup through network
Network port: Adaptive Ethernet port of 10M/100M
Size: 405 *310 *55