1) H. 264 compression format2)support SATA hard disk, and USB Mobil hard disk 3) Video input: 16 channel, Video output: 2 channel4)Audio input: 4CH, Audio output: 1CH (RCA)5) Alarm input: 8CH Alarm output: 1CH6) NTSC, PAL7) support: Mouse8)Multiple recording modes: Record by time, record by motion detection and automatically recording, mandatory recording9)Recording frame: NTSC: 240 f/s PAL: 200 f/s10) internet function: IE browser real time monitoring, monitoring by mobile phone11) network protocol: TCP/IP/UDP/DHCP/DNNS/PPPoE12)Search/replay by case list and accurate time13) Build in RS-485 interface, support PELCO-P, PELCO-D14)Infrared remote control is optional 15)VGA can be order (price is different)16)USB back up17)Remote control18) DC12V/5A