It is H .264 OS Embedded Linux Real time Standalone Network DVR. It has 4 Channel Audio Input/ 1Channel Audio Out put,4 Channel Video Input/1 Channel BNC, 1Channel VGA Output,Pentaplex Function, and Full D1 Recording Resolution on all Channels.
Supports 100/120 FPS of real time recording,Mobile Viewing, 2 pcs x 2 TB HDD, RS 485, 4 Channel Alarm Input and output.