... BNC Video output1channel VGA,1 channel TVAudio compression format8kHz×16bit ADPCMAudio inputRCA 2 channel, BNC Audio outputRCA 1 channel, BNCAlarm modeMotion Detection , ... Disk Space, Hard disk errorAlarm input2 channels inputAlarm output1 channel outputBit rate5 Levels:120MB/H,150MB/H,250MB/H, ... 576(PAL) 704×480 (NTSC)Playback resolution1 channel D1(just for the first channel) D1:704×576(PAL) 704×480 ...