Dahua NVR5432-16HP-EI2 32-Channel 16PoE WizSense AI Network Video Recorder with 4HDD & 8K Output
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 NVR5432-16HP-EI2 32-Channel 16PoE WizSense AI Network Video Recorder with 4HDD & 8K Output
The Dahua NVR5432-16HP-EI2 is part of Dahua’s advanced WizSense EI2 series, offering cutting-edge AI-driven surveillance capabilities combined with robust recording performance. It supports up to 32 IP camera channels and integrates 16 PoE ports, allowing direct connection and power supply to compatible IP cameras without the need for external PoE switches. With a maximum incoming bandwidth of 448 Mbps, this NVR ensures smooth handling of multiple high-resolution video streams. It supports cameras up to 32MP resolution and delivers ultra-clear monitoring with 8K HDMI output, making it suitable for high-end security control rooms and enterprise environments. The built-in AI engine provides intelligent video analytics including face detection and recognition, SMD Plus, perimeter protection, AcuPick smart search, and video metadata analysis. These features significantly enhance surveillance accuracy by reducing false alarms and improving incident detection efficiency. For storage, the device supports 4 SATA HDDs, each up to 20TB, offering extensive recording capacity for long-term video retention. It also supports remote storage expansion via iSCSI, making it highly scalable for growing security systems.
KEY FEATURES
- Supports up to 32 IP camera channels
- 16 × PoE ports (IEEE 802.3af/at) for direct camera connection and power
- Advanced AI functions: Face detection & recognition, SMD Plus, AcuPick, perimeter protection
- Supports up to 32MP IP camera resolution
- Max 448 Mbps incoming bandwidth
- Ultra HD 8K HDMI output
- Decoding capability up to 40 × 1080p @ 30fps
- 4 SATA HDD bays, up to 20TB per drive (80TB total storage)
- Supports H.265 / H.264 smart compression formats
- AI by camera: ANPR, people counting, heat map, PPE detection, metadata analysis
- Dual HDMI and VGA outputs for flexible display setups
- ONVIF compatibility with third-party IP cameras
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