SN502-4CH 83DVR SPECIFICATIONSVideo System ..............................................................................NTSC / PAL (Manual Switching)Video Compression Format .........................................................H.264Video Input (Composite Video Signal 1 Vp-p 75Ω BNC) ...................4 ChannelsVideo Loop Output (Composite Video Signal 1 Vp-p 75Ω BNC) .........NoVideo Output ..............................................................................Main Monitor Output: VGA Output 2xComposite Video Signal 1 Vp-p75Ω BNC;Call Monitor Output: NoMaximum Recording Resolution ..................................................CIF (352 x 288) Recording Speed (Frame)30 FPS per Camera (NTSC) / 25 FPS (PAL)Multilingual OSD.........................................................................English, Duetsch, Italiano, Russian,Francais, Espanol, Portugues, PolskiImage Quality Settings ...............................................................Best, Good, NormalHard Disk Storage .......................................................................500Gb SATA HDDHDD Quick Cleaning ....................................................................Quick clean up the “index system” ofthe recorded filesRecording Modes ........................................................................Always/ Manual/ Time ScheduleRecord/ MotionRefresh Rate ..............................................................................240 IPS for NTSC / 200 IPS for PALTriplex Operations ......................................................................Recording, Playback, and NetworkTransmissionRemote Control Operation...........................................................YesAudio I/O ....................................................................................1 RCA Audio Input, 1 RCA AudioOutput (Mono)Motion Detection Area ................................................................15 x 10 grids per camera for allchannelsMotion Detection Sensitivity ......................................................4 Adjustable variables with precisecalculation for motion detectionBackup Device ............................................................................USB 2.0 flash drive, network to avi,USB BurnerUSB Interface .............................................................................Back panel * 2 (Supports USB mouse,Removable HDD, USB Flashdrive)SATA Interface ...........................................................................Yes (Internal)VGA Interface ............................................................................Back panel * 1Web Transmitting Compression Format .......................................H.264Network Connections ..................................................................10/100 Base-T. Support remotecontrol; Playback DVR HDD video andlive view via EthernetWeb Interface ............................................................................Licensed software AP, IE browserRemote Alarm Notification .........................................................Email AlertsNetwork Protocol .......................................................................TCP/IP, PPPoE, DHCP and DDNS, 3GIR Receiver .................................................................................Yes