Ruijie RG-NBS3200-24GT4XS-P 24 Port Gigabit L2 Cloud Managed POE Switch 4* 10G Uplinks
- 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)
The Reyee RG-NB3200-24GT4XS-P is a cloud managed PoE switch with 4 SFP+ uplink ports with 128Gbps switching capacity and 95.24Mpps forwarding rate.
Ruijie RG-NBS3200 Series Switches are the next-generation high-performance, high-security and multi-service Layer 2 Ethernet switches with gigabit and 10-gigabit ports. Adopting an efficient hardware architecture design and equipped with Ruijie’s OpenWRT operating system, this switch series provides larger MAC address table size, faster hardware processing performance, and more convenient operating experience.
RG-NBS3200 series provides gigabit and 10-gigabit uplink ports. Every switch of this series offers 4 fixed 10G fiber ports with high-performance uplink capability.
RG-NBS3200 series switches provide comprehensive end-to-end QoS as well as flexible and rich security settings for small and medium-sized networks at an extremely high price-performance ratio to meet the needs of high-speed, secure and smart enterprise networks.
- 24-Port gigabit Layer 2 managed non-PoE switch, 4 SFP+ uplink
- Enterprise-class Quality Ensures High Performance
- IP Camera Recognition, Unique Value for CCTV Network
- Multiple Security Policies Protect Your Network
- Lifetime management on Ruijie Cloud at anytime anywhere
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