... control .Vedio systemPAL,NTSCAudio compressionADPCMRecord modeManual,Time fixed,Alarm,Motion detectionRecord search modeDate/Time search,Event search,channel search, ... channels showRecord speedPAL:25fps(adjustable) , NTSC:30fps(adjustable)Video storageHard DiskLocal playback1 or 4 channel playbackPTZYesHard Disk portSATA port ... ,chinese, Russian Realtime 4 Chnnel CCTV Security Digital Video Recorder