| Revew | 8-Channel Network Video Recorder DAHUA NVR4208-EIThe Dahua NVR4208-EI is a 1U WizSense network video recorder that records up to 8 IP cameras at up to 16MP and holds two hard drives. Its 256 Mbps bandwidth handles continuous recording from 4K cameras, and the two drive bays allow long retention, which makes it a good fit for businesses, warehouses and offices. The recorder runs its own AI analytics: face detection and recognition on 1 channel, perimeter protection (tripwire and intrusion) on 2 channels and SMD Plus on 4 channels, filtering false alarms from animals, leaves and lighting changes. You can watch live and recorded video on a monitor via 4K HDMI or VGA, in a web browser or in the mobile app; hard drives are sold separately. 
Key features- AI by recorder - 1-channel face detection and recognition with up to 10 face databases and 20,000 images, 2-channel perimeter protection and 4-channel SMD Plus for accurate human and vehicle alarms.
- AI by camera on all channels - With supported Dahua cameras, the recorder handles AI events on every channel: face recognition, perimeter protection, SMD, people counting and heat map.
- Cameras up to 16MP - Decoding of up to 2 x 16MP, 4 x 8MP or 8 x 4MP at 30 fps and Smart H.265+ compression that saves disk space and bandwidth.
- Fast video search - AI Search and QuickPick 2.0 (with compatible cameras) find people and vehicles by attributes such as clothing colour and vehicle type, without watching hours of footage.
- Connectivity and remote access - HDMI up to 3840x2160 and VGA, 4 alarm inputs and 2 outputs, RCA audio, 2 USB ports, ONVIF for third-party cameras and access from iOS, Android and a web browser.
Specifications| Manufacturer | Dahua | | Model | NVR4208-EI | | Series | WizSense, NVR4000-EI | | Form factor | 1U, 375 mm wide | | IP camera channels | 8 | | Bandwidth | 256 Mbps incoming, recording and outgoing (180 Mbps with AI enabled) | | Decoding capability | Up to 2 x 16MP, 4 x 8MP or 8 x 4MP at 30 fps | | AI by recorder | 1-ch face detection and recognition, 2-ch perimeter protection, 4-ch SMD Plus | | Video compression | Smart H.265+, H.265, Smart H.264+, H.264, MJPEG | | Video outputs | HDMI (up to 3840x2160), VGA (up to 1920x1080) | | Storage | 2 x SATA, up to 20TB per disk (disks not included) | | Network | 1 x RJ-45 10/100/1000 Mbps | | USB | 2 x USB 2.0 (front and rear) | | Audio | RCA in and out | | Alarm | 4 inputs, 2 outputs | | Interoperability | ONVIF (Profile S, G, T), CGI, SDK | | Power supply | 12 VDC, 4 A, external adapter | | Power consumption | <10 W without HDD | | Dimensions (W x D x H) | 375 x 284.3 x 53 mm | | Weight | 1.51 kg net, 2.76 kg gross |
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