Dahua IPC-HDW2849TMP-S-IL-0280B 8MP WizSense Smart Dual Light Fixed Eyeball IP Camera (4K, AI Human/Vehicle Detection)
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 IPC-HDW2849TMP-S-IL-0280B 8MP WizSense Smart Dual Light Fixed Eyeball IP Camera (4K, 2.8mm Lens, AI Human/Vehicle Detection)
The Dahua IPC-HDW2849TMP-S-IL-0280B is a professional 8MP network surveillance camera designed for high-resolution security monitoring in residential, commercial, and industrial environments. Powered by a 1/2.7" CMOS sensor, it delivers ultra-HD video up to 3840 × 2160 (4K), ensuring detailed image capture suitable for identification and evidence recording. This model belongs to Dahua’s WizSense AI series and integrates intelligent analytics such as human and vehicle detection, along with perimeter protection functions including intrusion and tripwire detection. These AI features significantly reduce false alarms caused by irrelevant motion such as animals, shadows, or environmental changes.
KEY FEATURES
- PoE (802.3af) + 12V DC power support
- IP67 weatherproof protection
- MicroSD card support (up to 256GB)
- Built-in microphone (audio recording)
- 3D noise reduction (3D NR)
- 120dB True Wide Dynamic Range (WDR)
- Smart H.265+ / H.264+ compression
- SMD Plus motion detection
- Perimeter protection (intrusion & tripwire)
- WizSense AI human & vehicle detection
- Up to 30m night illumination
- Smart Dual Light (IR + warm white LED)
- Fixed 2.8mm wide-angle lens
- 1/2.7" progressive CMOS sensor
- 8MP (4K) resolution: 3840 × 2160
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