Feature: 16CH video input/ 1CH VAG output; 8CH audio input/ 1CH audio output; H.264 video/ G.722 audio compression format; 6 levels of recording image quality; recording rate: PAL 11F/S/CH; NTSC 13F/S/CH IP function, TCP/IC, LAN; support 8HDD max; Specification: Video Input: PAL (625L/F, 25F/CH/S)NTSC (525L/F, 30F/CH/S) 16 CH composite video input (BNC, 1.0Vp-p75) Video Output: PAL (625L/F, 25F/CH/S)NTSC:(525L/F, 30F/CH/S) 1 CH composite video input (BNC, 1.0Vp-p75 ) 1 CH VGA output(Frequency 60Hz, Resolution 1024?68) Recording Rate: PAL 25F/CH/S, 625Lines / NTSC 30F/CH/S, 525Lines Audio Input: 8 CH audio input (RCA, 20-100mv, 10k) Audio Output: 1 CH audio output (RCA,20- 00mv,1k) Alarm Input: 9 CH (N.O/N.C) Alarm Output: 4 CH(N.O, relay close output) Compression Algorithm: Video compression: H264 Audio compression: G722 Resolution: Monitor display(704?76); VGA output(1024?68); Video compression CIF(352?88); Audio Sample Ratio: 8K sample/sec, 16bit/sample dot Recording Resolution: CIF Recording Pic Quality: 6 levels(1 2 3 4 5 6) 1 is best Code Flow(reference only): CIF: picture quality1-150M/H, 2-100M/H, 3-80M/H, 4-70M/H, 5-50M/H, 6-40M/H Operation System: Embedded real time operation system (RTOS) Disc Connector: PATA, SATA IO Connector: RS485, Alarm Input and output Network Connector: 10M/.100M(Ethernet network port) Power: 220V?0%, 50Hz?%; 110V?0%, 60Hz?%(optional) Operation Temperature: -10 -55degree Operation Humidity: 10%-90% Mainframe Consumption: 30W(excluding hard disc consumption) Dimension (WxDxH): 440x436x96.2mm