function features H.264 CIF compression algorithm, pure hardware compression, streaming is adjustable , every road is 25 frame/SEC, real-time and synchronization are reliable audio and video(AV)are synchronous, undertake timely voice recording and monitoring, support WIN98/WIN2000/WIN Nt operation platform, high stability, multitask mode, monitor. video. playback. transmission and backup can work at the same time customizable interface, 1/4/9/12/16/24/32 road all real-time display, video and playback, video way: schedules video, manual operation video/surveillance ,shift trigger video and external alarm video, high-resolution ,the image is adjustable, video resolution is 704*576（D1） real-time dynamic detection, preset point setting and linkage alarming, support holder, lens, the integration fast ball of real-time local or remote control, real-time data inventory management, operator multi-level management, operation log and alarm log management function , support LAN, Internet and telephone such transmission method to send real-time preview, remote real-time monitor, remote concentration record, can match with large scale digital matrix system to use, hardware can prevent system halted to restart circuit, it's effective to prevent crash ；can timing set the time of open or close, fault diagnosis, automatic recovery the function with power off .