Hikvision HiLook DVR-208U-M1(C) Hikvision 8ch TVI 8mp/4K DVR with Acusense
- CCTV Lens Guide
- Hard Drive Size Guide
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)
Hikvision Hilook brings Acusense technology at a great price with this new DVR-208U-M1(c), if you want to minimise false alerts then this is the DVR for you! (This DVR is also perfect for the 3K range of Hilook cameras).
- Deep learning based human and vehicle targets classification of Motion Detection 2.0
- 8 analog channels and 1 HDD 1U DVR
- Efficient H.265 Pro+ compression technology
- Up to 8 MP@8 fps and 5 MP@12 fps encoding capability
- HDTVI/AHD/CVI/CVBS/IP video inputs
- Up to 16 network cameras can be connectedal
- HDMI output at up to (3840 x 2160)
- VGA output at up to (1920 x 1080)
- Supports 3K at 20fps
Smart Function
Deep learning based human and vehicle targets classification of Motion Detection 2.0
Compression and Recording
- H.265 Pro+ video compression improves encoding efficiency, and reduces data storage costs
- Support 8 MP@8 fps encoding
Storage and Playback
- 1 SATA interface (up to 10 TB capacity)
- Smart search for efficient playback
Network & Ethernet Access
- Compatible with major Wi-Fi dongle products in the market
- HiLookVision & DDNS (Dynamic Domain Name System) for easy network management
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