Hikvision HiLook DVR-204U-K1 4 channel TVI up to 8MP (with 2 extra IP channels via LAN)
- 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, frame rate settings, and whether you have H.265 encoding enabled or not to save space (We advise turning it on to double the capacity shown below with ease).
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 (to perhaps double or more these figures again).
|
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 2 Terabytes for a 4 x 4/5MP HD camera setup, as this should give you approx 2 weeks using H.265 @ 20fps and that is on continuous, not motion-detected recording.
(You may only require the full 25 frames per second on certain cameras if things are fast-moving - ie above a till)
You can also use the Hikvision online calculator to work out what works best for you specifically: https://tools.hikvision.com/ca...
(All of our hard drives come fitted and are CCTV-specific from one of the major brands)
This HiLook by Hikvision DVR-204U-K1 4 channel TVI 8MP Lite Hydrid DVR provides incredible value and multiformat support with ease of use.
Video Input and Transmission
l Self-adaptive HDTVI/HDCVI/AHD/CVBS signal input (5MP or 8mp for TVI only @8fps unless 8MP Lite mode enabled then @ 15fps)
l Up to 2-ch 8 MP IP cameras channels via the LAN (on top of the 4 coax channels - so 6 cameras max or 4 extra 4MP cams with emode enabled)
l Long distance transmission over UTP and coaxial cable: max. 800m for 1080p and 1200m for 720p HDTVI signal
Compression and Recording
l H.265+/H.265/H.264+/H.264 encoding for the main stream, and H.265/H.264 for the sub-stream of analog cameras
l Connectable to H.265+/H.265/H.264+/H.264 IP cameras
l H.265+ can be enabled to improve encoding efficiency and reduce data storage costs
l Full channel recording at up to 8 MP resolution
Video Output
l Simultaneous HDMI/VGA output
l HDMI output at up to 4K (3840 × 2160) resolution for DVR-208U-F1
Storage and Playback
l 1 SATA interface (up to 8 TB capacity per HDD)
l 4/8-ch synchronous playback
l Smart search for efficient playback
l Supports the 3rd party cloud storage (Dropbox/Google Drive/Microsoft OneDrive)
Smart Function
l Supports multiple VCA (Video Content Analytics) events for both analog and smart IP cameras
l Supports line crossing detection and intrusion detection of all channels, and 2-ch sudden scene change detection
l VCA information overlay in live view and smart playback
l VQD (Video Quality Diagnostics)
l Supports PTZ control via Omnicast VMS of Genetec protocol
Network & Ethernet Access
l Hik-Connect & DDNS (Dynamic Domain Name System) for easy network management
l 1 RJ45 10M/100M self-adaptive Ethernet interface for DVR-204U-K1, and 1 RJ45 10M/100M/1000M self-adaptive Ethernet interface for DVR-208U-K1
l Output bandwidth limit configurable
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