... electronic amplification,automatic taking turnPreview resolutionD1:704×576(PAL) 704×480 (NTSC)Playback resolution1 channel D1(just for the ... ,Montion detection,Trigger alarmPlayback4channels real-time playback,(PAL)200fps@CIF,(NTSC)240fps@CIF,Support time and data playback ... functionSupport 10 seconds prerecordBackup Support USB disk,HDD,DVD/CDRM,networkWorking environment+5°C-+50°CWorking humid< ...