Model NVR508-16B NVR508-32B NVR508-64B Video/Audio InputIP Video Input16-ch32-ch64-chAudio Input1-ch, RCANetworkIncoming bandwidth320MbpsOutgoing bandwidth160MbpsRemote Users128ProtocolsTCP/IP, P2P, UPnP, NTP, DHCP, PPPoE, HTTP, HTTPS, DNS, DDNS, SNMP, SMTPBrowserIE(IE10/11) for WindowsFirefox (version 52.0 and above) for WindowsChrome(version 45 and above) for WindowsEdge(version 79 and above) for WindowsVideo/Audio OutputHDMI/VGA OutputHDMI:4K (3840x2160)@30, 1920x1080p@60, 1920x1080p@50, 1600x1200@60, 1280x1024@60, 1280x720@60, 1024x768@60VGA:1920x1080p@60, 1920x1080p@50, 1280x1024@60, 1600x1200@60, 1280x720@60, 1024x768@60Recording Resolution12MP/8MP/6MP/5MP/4MP/3MP/1080p/960p/720p/D1/2CIF/CIFAudio Output1-ch, RCATwo-way Audio1-ch, RCA(Using the audio input and output)Audio CompressionG.711A, G.711USynchronous Playback16-chLive View DisplayVGA: 1/4/6/8/9/16HDMI: 1/4/6/8/9/16VGA: 1/4/6/8/9/16/25/36HDMI: 1/4/6/8/9/16/25/36Simultaneous Output: VGA: 1/4/6/8/9/16/25/36/64HDMI: 1/4/6/8/9/16/25/36/64Independent Output: VGA: 1/4/6/8/9/16/25/32HDMI: 1/4/6/8/9/16/25/32Corridor Mode Screen3/4/5/7/9/10/12/163/4/5/7/9/10/12/16/323/4/5/7/9/10/12/16/32SnapshotFTP/Schedule/Event Snapshot4-ch snapshot, up to D1 resolutionDecodingDecoding FormatUltra 265/H.265/H.264Live View/Playback12MP/8MP/6MP/5MP/4MP/3MP/1080p/960p/720p/D1/2CIF/CIFCapabilityUltra 265/H.265: 2 x 12MP@30, 4 x 4K@30, 6 x 5MP@30, 8 x 4MP@30, 10 x 3MP@30, 16 x 1080p@30, 32 x 960p@25, 36 x 720p@30, 64 x D1H.264: 2 x 12MP@30, 2 x 4K@30, 4 x 5MP@30, 6 x 4MP@30, 8 x 3MP@30, 14 x 1080p@30, 28 x 960p@25, 30 x 720p@30, 64 x D1Hard DiskSATA8 SATA interfacesCapacityUp to 12TB for each diskDisk GroupSupportSmartVCA Detection by CameraIntrusion Detection, Cross Line Detection, Enter Area, Leave Area, Defocus Detection, Scene Change Detection, Object Left Behind, Object Removed, Auto Tracking, UMD(Ultra Motion Detection)VCA SearchBehavior Search, People Counting Report, Vehicle SearchPeople CountingPeople Flow Counting, Crowd Density MonitoringSmart Intrusion Prevention (SIP), Vehicle Detection, UMD by CameraTotal 8-chGeneral AlarmGeneral AlarmMotion, Tampering, Human Body Detection, Video Loss, Alarm Input, Audio DetectionAlert AlarmIP Conflict, Network Disconnected, Disk Offline , Disk Abnormal, Illegal Access, Hard Disk Space Low, Hard Disk Full, Recording/Snapshot AbnormalExternal InterfaceNetwork Interface2 RJ-45 10M/100M/1000M self-adaptive Ethernet InterfaceUSB InterfaceFront: 2 x USB2.0, Rear panel: 1 x USB3.0RS232NARS4851Alarm In16-chAlarm Out4-chGeneralPower Supply100~240V ACPower Consumption: ≤ 32W (without HDD)Working Environment-10°C~+ 55°C (+14°F~+131°F), Humidity ≤ 90% RH (non-condensing)Dimensions (W×D×H)442mm × 426mm × 89mm (17.4" × 16.8" × 3.5")Weight (without HDD)≤ 4Kg (8.80lb)CertificationCertificationCE, FCC, UL, RoHS, WEEECEEN 55032, EN 61000-3-3, EN IEC 61000-3-2, EN 55035FCCPart15 Subpart B