... Greek,Indonesian,Italian,,Japanese,Portuguese,Russian,Thai,T-Chinese,S-Chinese,Turkish,Brazilian,Bulgarian,Farsi ... display zoneAudioAudio CompressionG711ABidirectional TalkSupportRecord &PlaybackRecording ModeManual>Alarm>Video Detection>ContinuousPlayback1~4 channels playback simultaneously,Pause,stop ... Audio Input4 channel ,RCA, 200-2800mV,30KΩ Audio Output1 channel ,RCA, 200-3000mV,5KΩ Alarm Input4 ...