NightWatcherD1 Digital Video Recorder User Manual51. Product Introduction1.1 Product overviewThe NightWatcher D1 DVR is designed specifically for security and surveillance applications. and is anoutstanding digital surveillance product. It incorporates an embedded LINUX operating system which is morestable. It incorporates standard H.264mp video compressed format and G.711A audio compressed format whichensures the highest quality image, low error coding ratio and single frame playback. It incorporates TCP/IPnetwork technology which ensures stable network communication and telecommunication ability.The NightWatcher D1 DVR can be used individually or online, applied as a part of a safety surveillancenetwork. With the professional network video surveillance software provided it offers comprehensive network andtelecommunication ability.The NightWatcher D1 DVR can be installed in a variety of applications in business or at home.1.2 Main functionsReal-time surveillance· HDMI and VGA interface· surveillance function through monitor or displayStorage· non-working hard disk dormancy processing which is convenient to radiate heat, reduce power and extendlife-span· unique storage format which ensures data protectionCompression· real-time compression by individual hard disk which ensures the audio and video signal stable synchronizationBackup· through SATA and USB interface, such as USB hard disk, memory stick and etc.· through network download of files on the hard diskPlayback· individual real-time video recording as well as search, playback, network surveillance, recording check,downloading and etc.