Video Compression format: H. 264 Language: Chinese, English, Japannese, Korean Video System: NTSC or PAL Video Input: 16CH, NTSC/PAL, 1.0VP-P, 75ohms, BNC Video Outputs: 1CH monitor output, 1CH slave monitor. VGA output(optional) Video Resolution: 720 * 480, 720 * 576 Display Modes: Full screen, multiple screen, Sequence display, exchangable channel display.  Audio: 4CH Recording Modes: Manual, Continue, alarm, motion detection Operating System: Embeded Linux Operating Method: USB mouse, remote control, control panel Triplex Operation: Live & record & playback & backup & network Refresh Rate: CIF: NTSC 240fps/360*240, CIF: PAL 200fps/360*288 1/2D1: NTSC 120fps/720 * 240, 1/2D1: PAL 100fps/720 * 288 D1: NTSC 60fps/720 * 480, D1: PAL 50fps/720 * 576 Watchdog (LED indicator): Power, channel, backup, network Event Modes: Alarm trigger, video detection trigger Alarm Input: 16CH alarm inputs, 1 repeater output, COM & N. O. & N. C.  High Playback Speed: X 2, X 4, X 6, single frame playback Playback Searching: Date & time, Manual recorder time list, Schedule list Network Protocols: TCP/IP, DHCP & static IP PTZ Contro: RS485, preset positions operation HD Storage: SATA X 4 Backup System: USB, CD-RW, network backup, AVI format backup Power Supply: DC: 12V/5A AX dimensions: 430(L)X 360(W)X 87 (H) mm Environment Temperature: -30c ~ 60c