1.4CH DVR H.264 Compression 2.4CH Video/Audio Input 3.VGA Output 4.Mobile Phone Remote View ... FTPAudioAudio CompressionG711ABidrectional TalkSupportRecord &PlaybackRecording ModeManual>Alarm>Video Detection>ContinuousPlaybackMulti channels playback simultaneously,pause,stop,rewind,fast play, slow ... Output1 channelAlarm InputN/A(could be expanded to 4 -8channel)Relay OutputN/A(could be expanded to ...