... : live, recording, playback, backup & remote accessUser InterfaceGUI, on-screen menu tipsDisplay1/4/16VideoVideo StandardsPAL 625 line,50 f ... movement, tour, alarm, email, snapshot & FTPAudioAudio CompressionG711ATwo Way AudioSupportRecord & PlaybackRecording ModeManual/Alarm/Video Detection/ContinuousPlayback1~16channels playback ... 16CH cctv DVR, 16 channel cctv dvr, two way audio