H.264 8CH 1080P Real time (30fps/ch) AHD DVR Linux Operating System

H.264 8CH 1080P Real time (30fps/ch) AHD DVR 
Linux Operating System, HI3531+HI3531 Chipset 
Playback speed: PAL:25fps@1080P(each ch) / NTSC: 30fps @1080P(each ch) 
Playback Channel: 8CH 1080P/720P Simultaneously 
Video-input /output: 8CH inputs / VGA and HDMI 
Audio input /output: 4CH inputs /1CH output(RCA) 
Sensor & Alarm: 8CH inputs /1 output 
Display resolution: PAL:1920*1080P or1280*720P/  NTSC: 1920*1080P or1280*720P 
Record resolution: PAL:1920*1080P or1280*720P/  NTSC:1920*1080P or1280*720P 
Record Speed:PAL:25fps@1080P(each ch) / NTSC: 30fps @1080P(each ch) 
Record Modes:Continuous/Manual/Motion detect/Sensor/Alarm recording 
Support IE, PTZ, Mobile phone, CMS and special client software 
IR Extender Port:yes 
Network Type: Lan, DHCP, Dynamic IP and DDNS 
Support: 2 SATA HDDs, up to 4TB 
Demension: 380X340X50(mm) 
P2P function optional 
Weight:4.5KG