Hikvision HiLook DVR-216U-M2 16 Channel 8MP 4K AcuSense Hybrid DVR
- 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-216U-M2(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).
Audio Over Coax (AoC) No need for a seperate cable to add audio capability to your cctv system,. Just use a AoC DVR along with AoC capable camera and both the video signal & audio signal will be transmitted along a single cable. AoC is compatible with RG59 Coax & Cat5/6 cable. For Audi-Over-Coax use these compatible AOC cameras.
5-In-1 Hybrid DVR 5-in-1 CCTV is a new hybrid format, allowing HD-TVI, AHD, HD-CVI, CVBS & IP cameras to be connected to the DVR. This means you no longer have to worry about format compatibility when setting up or updating a CCTV security system - as long as it has a BNC connection and uses coaxial cable then it should work. Hikvision 5-In-1 DVR supports Multiple HD Video formats over coaxial cable (RG59).
- Deep learning based human and vehicle targets classification of Motion Detection 2.0
- H.265 Pro+/H.265 Pro/H.265 video compression
- HDTVI/AHD/CVI/CVBS/IP video inputs
- Audio via coaxial cable
- Up to 24-ch IP camera inputs (up to 8 MP)
- Up to 8 MP@8 fps encoding capability
- Supports 3K cameras 20fps
