4 channels video input in one card. The maximum display/recording rate is 25fps under PAL format, and 30fps under NTSC format. 4 screen display modes are available. Multi alarm triggering method: sensor, motion, video loss and HDD space shortage. Support schedule recording mode: recycling recording method available. MPEG4 video compression format. 5 level recording quality options available, and the recording frame rate rang from 1 to 30 fps adjustable fpr each channel. Support multi-channel playback, searching by time/date and recording events, images can be Zoom/capture/save/print/backup. Support remote surveillance and PTZ control through web browser, support dynamic domain name. Configurable auto reboot function for preventing PC deadlock. System requirements: Windows 2000/XP or better. Pentium 4 of CPU or better. 512MB of RAM or better. Microsoft DirectX 9.0C. USB 2.0 free port. Audio Card/True Color VGA Card.