Dahua NVR5208-8P-EI2 – 8 Channel WizSense 1U Network Video Recorder with 8 PoE Ports
Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned. A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". See below to give you some idea on angles of Megapixel HD Cameras:
| Lens in mm | Approx Viewing Angle (degrees) | Ideal Distance (metres) | Typical usage/notes |
|---|---|---|---|
| 2.8 | 106 | <6 | For seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) - clearly "zoomed out" |
| 3.6/4 | 83-90 | <12 | A great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom" |
| 6 | 56 | 6-20 | Narrows down the angle and zooms in to look past the immediate area a little to gain more detail - down a driveway for example from higher up |
| 12 | 24 | 20+ | Zooms in significantly more to look at a gate, entrance or adjascent building |
| 16 | 19 | 24+ | As above but more so |
The amount of hard drive space you require is dictated by how many cameras, as well as their resolution and frame rate settings. Finally you can often make your storage space last a lot longer by enabling motion detected recording rather than continuous, especially if there are long periods of no activity.
|
Resolution (Megapixels) |
Days of storage provided by 1TB per camera (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (50% motion- 15 frames per second) |
|---|---|---|---|
| 1 | 44 | 11 | 36 |
| 2 | 22 | 5 | 18 |
| 3 | 17 | 4 | 14 |
| 4 | 11 | 3 | 9 |
| 5 | 9 | 2 | 8 |
| 6 | 8 | 2 | 6 |
| 8 (4K) | 5 | 1 | 4 |
| 12 | 4 | 0.5 | 3 |
As a rule of thumb we recommend a minimum of 2 Terabytes per 4 x 2-4MP HD cameras, as this should give you 2 weeks to a month with a few adjustments on motion detected recording. You may only require the full 25 frames per second on certain cameras if things are fast moving.
(All of our hard drives come fitted and are CCTV specific from one of the major brands)
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Dahua NVR5208-8P-EI2 – 8 Channel WizSense 1U Network Video Recorder with 8 PoE Ports
The Dahua NVR5208-8P-EI2 is an advanced 1U network video recorder designed for modern intelligent surveillance systems. Part of Dahua’s WizSense AI range, it combines powerful recording performance with deep learning-based video analytics to enhance security accuracy and efficiency. This model supports up to 8 IP camera channels and includes 8 integrated PoE ports, allowing direct camera connection without the need for an external switch. With support for ultra-high-definition cameras up to 32MP, it ensures exceptional video clarity for critical monitoring environments. Equipped with advanced AI capabilities, the recorder provides intelligent functions such as face detection and recognition, perimeter protection, smart motion detection (SMD Plus), AcuPick technology, ANPR, and video metadata analysis. These features significantly reduce false alarms while improving threat detection accuracy. The NVR also supports dual HDD storage (up to 20TB per drive) and offers efficient compression technologies including Smart H.265+, reducing bandwidth and storage consumption without compromising video quality. Its robust decoding capability allows smooth multi-channel playback and live viewing in ultra-high resolution, including support for 8K HDMI output.
KEY FEATURES
- 8-channel IP camera inputs
- Built-in 8 PoE ports (plug-and-play camera connection)
- Supports up to 32MP camera resolution
- Advanced AI by recorder: face detection & recognition, SMD Plus, perimeter protection
- AcuPick smart video search technology
- ANPR and video metadata analytics support
- Smart H.265+/H.265 video compression
- Dual SATA HDD support (up to 20TB per drive)
- High decoding performance with multi-channel HD playback
- 8K HDMI video output support
- Remote access via mobile app (iOS & Android)
- ONVIF compatibility for third-party IP cameras
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