... ,Level 3 Video :576(PAL),480(NTSC) VBR/CBR Surveillance system Embeded hardware video encoder H.264 AttributePE-48Video4-channel video ... standard:PAL/NTSCvideo resolution:720X576,720X480,352X288,352X240Audioaudio mode of 4-channel: stereo ,left channel ,right channelaudio format:MPEG-1 ... I,II,III(MP3),MPEG-2 layer2,MPEG-2,MPEG-4 AAC,AC3Front panelLED display screen ,power switch ,power lightBack ...