System:- Processor Hi3520D V200. Codec H.264. Encode 4*1080N@18fps; 4*1080P; 4*1080N. Decode 4*1080N@18fps; 4*1080P; 4*1080N Analog:4*1080P@18fps; 4*1080P; 4*1080N. Video:- Multi-mode Hybird: 4*1080P(analog)+4*1080P(ip). IP:8*1080P. Playback 4ch. Compression G.711a. Audio:- Intercom Support. Record mode Manual>Alarm>Motion detection>Timing. Inquire mode Inquire by Time/Calendar/Event/Channel. Management:- Storage Mode HDD Storage, Network Storage. Backup Network, USB, SATA. Video input 4*BNC(Support Coaxitron). HDMI output 1*HDMI. VGA output 1*VGA. Audio I/O 4. Inerface:- Alarm I/O Optional. Ethernet port 1*10/100Mbps Ethernet port, RJ45 port. PTZ contorl 1*RS485, Support for multiple PTZ protocol. USB port 2*USB2.0 ports. HDD 1*SATA interface (Up to 6TB). Temperature 0℃- + 55℃. Humidity 10% -90% RH. General:- Power supply 12V/2A. Consumption <10W(Without HDD）