ModelNVR304-16E2NVR304-32E2Video/Audio InputIP Video Input16-ch32-chTwo-way Audio Input1-ch, RCANetworkIncoming Bandwidth320MbpsOutgoing Bandwidth320MbpsRemote Users128ProtocolsTCP/IP, P2P, UPnP, NTP, DHCP, PPPoE, HTTP, HTTPS,DNS,DDNS,SNMP,SMTP,NFSBrowserIE(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 OutputVGA:1920x1080p/60Hz, 1920x1080p/50Hz, 1600x1200/60Hz,1280x1024/60Hz, 1280x720/60Hz, 1024x768/60HzHDMI:4K (3840x2160)/30Hz, 1920x1080p/60Hz, 1920x1080p/50Hz, 1280x1024/60Hz, 1280x720/60Hz, 1024x768/60HzRecording Resolution12MP/8MP/6MP/5MP/4MP/3MP/1080p/960p/720p/D1/2CIF/CIFAudio Output1-ch, RCAAudio CompressionG.711A, G.711USynchronous Playback16-chLive View Display1/4/6/8/9/161/4/6/8/9/16/25/36Corridor Mode Screen3/4/5/7/9/10/12/163/4/5/7/9/10/12/16/32SnapshotFTP/Schedule/Event Snapshot16-ch snapshot, up to 1080P resolutionDecodingDecoding FormatUltra 265, H.265, H.264Live View/Playback12MP/8MP/6MP/5MP/4MP/3MP/1080p/960p/720p/D1/2CIF/CIFCapability1 x 12MP@30, 2 x 4K@30, 5 x 4MP@30, 10 x 1080P@30, 16 x 720P@301 x 12MP@30, 2 x 4K@30, 5 x 4MP@30, 10 x 1080P@30, 22 x 720P@30, 32 x D1Hard DiskSATA4 SATA interfacesCapacityUp to 8TB for each disk(The maximum HDD capacity varies with environment temperature)eSATANADisk GroupSupportRAIDRAID 1,5SmartVCA Detection by CameraIntrusion Detection, Cross Line Detection, Enter Area, Leave Area, Defocus Detection, Scene Change Detection, Object Left Behind, Object Removed, Auto TrackingVCA SearchBehavior Search, Vehicle SearchPeople CountingPeople Flow Counting, Crowd Density MonitoringSmart Intrusion Prevention (SIP), Vehicle Detection by CameraTotal 8-chGeneral AlarmGeneral AlarmMotion, Tampering, Human Body Detection, Video Loss, Input Alarm, Audio DetectionAlert AlarmIP Conflict, Network Disconnected, Disk Offline , Disk Abnormal, Illegal Access, Hard Disk Space Low, Hard Disk Full, Recording/Snapshot AbnormalExternal InterfaceNetwork Interface2 RJ45 10M/100M/1000M self-adaptive Ethernet InterfacesUSB InterfaceFront panel: 1 x USB2.0,Rear panel: 1 x USB2.0 1 x USB3.0RS232NARS4851Alarm In16-chAlarm Out4-chGeneralPower Supply12V DC/5APower Consumption: ≤ 12 W (without HDD)Working Environment-10°C~+ 55°C (+14°F~+131°F), Humidity ≤ 90% RH (non-condensing)Dimensions (W×D×H)440mm × 344mm × 48mm (17.3" × 13.5"× 1.9")Weight (without HDD)≤3Kg (6.61lb)CertificationCertificationCE, FCC, UL, RoHS, WEEECEEN 55032: 2015, EN 61000-3-3: 2013, EN IEC 61000-3-2: 2019, EN 55035: 2017FCCPart15 Subpart B, ANSI C63.4