DVR a multifunction recorder archives all visual images on the hard disk by digital compressed technology. The innovative multi connectivity characteristic can be connected to any Tele-Eye system, motion sensor, burglar alarm and programmable motion detector for simultaneous video transmission over TCP/IP (LAN, Intranet or Internet) and telephone networks. The DVR surveillance system, which utilizes the most advance digital video compression technologies, brings you the highest picture resolution and video performance. The system archives up to 30-day of video files which also facilitate smart search and replay when alarm event arises. DVR is proved to be the key component of today mainstream surveillance system.