Codec :Mpeg4 ASIC OS :Embedded Linux Compression : Video : MPEG4 ASP@L5 Audio : ADPCM Video Input. :4CH BNC Loop Out Video Out : 1CH BNC, CVBS 1CH BNC Loop Back, CVBS. BNC Loop Back for each Camera Input 1CH SVHS, S-Video 1CH BNC Spot of 4CH video IN signal, CVBS 1CH VGA, XVGA Audio Input: 4CH RCA, Mic Level or Line Level (Mic Level is option) Audio Out :1CH RCA, Line Level(Support Live Audio path through). Alarm Out :4channel Terminal Block PTZ Control Port : 1Ch Terminal Block, RS-485 Network : 1CH Ethernet 10/100 Base-T Storage : 4 HDD / 3 HDD + 1 CDRW User Interface : Front Key, Remote Controller Backup : CDRW, USB Memory Stick Up Grade : CDRW, USB Search : Time Bar, Event, Quick, Live Watch Dog : Supported H/W and S/W simultaneously Motion Detection : H/W Based Motion Detection, 16x12 Block per each channel Water Mark : H/W Base Water Mark Recording Mode : Normal,Motion Detection,Sensor,Schedule,Emergency PTZ Protocol : Pelco D / Pelco P, etc Network Protocol : TCP/IP,HTTP,SMTP,FTP,DHCP,PPPoE,DDNS System Recovery after power failure : Auto-Rebooting and Auto-Reconnection to Network Remote Control S/W Operation Condition : 5 ~ 40℃ Power : DC12V, 5.8A (Adapter Supplying) Dimension : 422(w)x66(H)x385(D)mm Weight : 5Kg