Video input: 4 channel video inputs with BNC.

Audio input: 2 channel audio input with microphone.

Surveillance channel: 4 cards can be inserted in the same PC at most, to form 16 surveillance screen real time display modes.

Video resolution: 640 X 480, 352 X 288, 320 X 240 ( both view and playback ).

Compression mode: Latest MPEG-4 / H.264.

Compression ratio: 60-150M/C/H (60-150M of hard disc each channel per hour).

Video total frame rate: 120fps in NTSC, 100 fps in PAL for display and recording.

Operating system: Windows2000 Professional / Server / XP.

Network protocol: TCP/ UDP.

Network port: 9000/9001/9002.