1)Compression format: H.264
2)Video input: 4 CH,1.0Vp-p/75 Ohms BNC
3)Video output: 1 CH,1.0Vp-p/75 Ohms BNC
4)Video encircle output: 4
5)Support:1 SATA HDD(each one up to 2TB)
6)VGA resolution: 1024*768, 1280*1024 
7)CIF:100Fps(PAL)/120Fps(NTSC)
8)Audio input: RCA *1
  Audio Output: RCA*1
9)D1:704*576/704*480
10)Interface:USB2.0*2,RJ45*1,RS485*1
11)size:220*230*46mm
12)with mouse control
13)Optional:remote control
14)Power:12V/2A