1. H.264 Standalone DVR 2. Support SATA HardDisk,Mouse,USB*2,network 3. Audio, ... alarm, Raid functionPowerful network software:built-in web server,multi-DVR client &SMS Networking access for remote live viewing,recording,playback ... 75Ω,1 VGA output(optional)Audio Input1 (could be expandedto 4channel)Audio Output1 channelAlarm InputN/A(could be expanded to ... .38KG 4CH Full D1 Real Time H.264 CCTV DVR