Dahua NVR5232-16P-EI2 – 32 Channel WizSense AI Network Video Recorder with 16 PoE Ports (1U, 2 HDD Bays, EI2 Series)
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 NVR5232-16P-EI2 – 32 Channel WizSense AI Network Video Recorder with 16 PoE Ports (1U, 2 HDD Bays, EI2 Series)
The Dahua NVR5232-16P-EI2 belongs to the WizSense 5-EI2 Series, an upgraded generation of Dahua AI network video recorders that enhances decoding capability, AI accuracy, and overall system responsiveness compared to earlier EI models. It supports up to 32 IP camera channels with resolutions up to 32MP, making it suitable for commercial buildings, warehouses, campuses, retail chains, and enterprise surveillance deployments. The recorder delivers up to 448 Mbps incoming/recording/outgoing bandwidth, ensuring stable performance even when handling multiple high-resolution video streams simultaneously. A key advantage of this model is its 16 integrated PoE ports (IEEE 802.3af/at), allowing IP cameras to be powered and connected directly from the recorder. This reduces installation complexity, eliminates the need for an external PoE switch, and improves deployment efficiency in larger installations.
KEY FEATURES
- N+M cluster redundancy support
- iSCSI storage expansion support
- 2 × SATA HDD bays
- Smart H.265+, H.265, H.264 compression
- Up to 40 × 1080p decoding capability
- ANPR support via compatible cameras
- Video metadata analysis (human, vehicle, non-human)
- AcuPick intelligent video search
- Perimeter protection (IVS rules)
- Smart Motion Detection Plus (SMD Plus)
- Face detection and recognition
- Up to 448 Mbps bandwidth (incoming/recording/outgoing)
- Up to 32MP camera support
- WizSense EI2 AI platform
- 16 built-in PoE ports (IEEE 802.3af/at)
- 32 IP camera channel
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