Dahua NVR4116HS-EI – 16CH WizSense AI Network Video Recorder (1 HDD, 256 Mbps)
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 NVR4116HS-EI – 16CH WizSense AI Network Video Recorder (1 HDD, 256 Mbps)
The Dahua NVR4116HS-EI is part of the WizSense EI Series, offering a powerful combination of intelligent AI analytics, high-performance video processing, and flexible IP camera management. It supports up to 16 IP camera channels, making it suitable for medium and larger surveillance installations. The recorder provides up to 256 Mbps incoming, recording, and outgoing bandwidth (180 Mbps when AI functions are enabled), allowing smooth handling of multiple high-resolution camera streams up to 16MP. The system integrates Dahua’s WizSense AI engine, enabling advanced intelligent detection and analysis. Key AI functions include face detection, face recognition, perimeter protection, and SMD Plus, all designed to improve detection accuracy and reduce false alarms. Face recognition supports up to 10 face databases with a total of 20,000 face images, allowing efficient identification and fast forensic search across recorded footage. When used with compatible Dahua AI cameras, additional intelligent features become available, including human and vehicle classification, people counting, heat map analysis, ANPR, and stereo analysis. These features provide enhanced situational awareness and improved security decision-making.
KEY FEATURES
- 16-channel IP video recording
- Supports IP cameras up to 16MP
- Up to 256 Mbps bandwidth (180 Mbps with AI enabled)
- WizSense AI analytics platform
- Face detection and face recognition
- Perimeter protection (tripwire, intrusion detection)
- SMD Plus intelligent motion detection
- Up to 10 face databases / 20,000 face images
- Human and vehicle classification support
- ANPR, people counting and heat map support (via AI cameras)
- Smart H.265+ compression
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