Dahua NVR5216-16P-XI – 16 Channel WizMind AI Network Video Recorder with 16 PoE Ports (1U, Dual HDD)
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 NVR5216-16P-XI – 16 Channel WizMind AI Network Video Recorder with 16 PoE Ports (1U, Dual HDD)
The Dahua NVR5216-16P-XI is a powerful 1U network video recorder from Dahua’s advanced WizMind AI series, engineered for large-scale, intelligent surveillance applications requiring deep learning analytics and high processing performance. It supports up to 16 IP camera channels and integrates 16 PoE ports, allowing direct camera connection without the need for external PoE switches, simplifying installation and reducing infrastructure costs. The recorder is designed for demanding environments such as commercial complexes, industrial facilities, transport hubs, and critical infrastructure sites. With support for ultra-high-definition cameras up to 32MP resolution, the NVR delivers exceptional clarity and detail for advanced monitoring and forensic analysis. It utilises Smart H.265+ compression technology, significantly reducing bandwidth and storage requirements while maintaining superior image quality. The device is powered by advanced AI capabilities under the WizMind platform, offering intelligent functions such as face detection and recognition, perimeter protection, Smart Motion Detection Plus (SMD+), AcuPick smart search, ANPR (Automatic Number Plate Recognition), video metadata analysis, heat mapping, and people counting. These features enhance detection accuracy and enable fast retrieval of relevant video footage.
KEY FEATURES
- 16 IP camera channels
- Built-in 16 PoE ports (plug-and-play installation)
- Advanced WizMind AI deep learning platform
- Supports cameras up to 32MP resolution
- AI functions: Face detection & recognition, AcuPick search, SMD+, ANPR, metadata analysis
- Perimeter protection with reduced false alarms
- Smart H.265+ compression technology
- Up to 512 Mbps incoming bandwidth
- Dual SATA HDD support for high-capacity storage
- Heat map and people counting analytics
- ONVIF support for third-party cameras
- Remote viewing via mobile app (iOS & Android)
- HDMI and VGA local video output
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