... :MODEL NUMBER DVR-0402Video CompressionH.264System resources4 channel CIF real time recording and network transmission at one time,1 channel or ... Vedio systemPAL,NTSCAudio compressionADPCMRecord modeManual,Time fixed,Alarm,Motion detectionRecord search modeDate/Time search,Event search,channel search, ... Dimension315x 216 x 45mm (W x D x H) Realtime H.264 Hexaplex 4 Ch Network CCTV Security Digital Video ...