Ruijie Reyee RG-NBS5100-24GT4SFP 24-Port L3 Managed GbE Access Switch w/ 4 x 1G SFP Ports
- 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)
Ruijie RG-NBS5100-24GT4SFP Managed Network Switch
The Ruijie RG-NBS5100-24GT4SFP is a high-performance managed network switch designed for small to medium-sized businesses and enterprise networks. With advanced Layer 2/Layer 3 features, robust reliability, and flexible connectivity options, this switch provides a stable and scalable networking solution for demanding environments.
Key Features
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24 Gigabit Ethernet ports for high-speed wired connectivity
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4 SFP slots for flexible fiber uplinks and long-distance connections
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Advanced Layer 2/Layer 3 management for efficient traffic control and routing
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High-performance switching capacity for reliable data throughput
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Energy-efficient design reduces power consumption without compromising performance
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Compact form factor suitable for rack or desktop deployment
Reliable and Flexible Network Solution
The RG-NBS5100-24GT4SFP provides businesses with a robust and versatile networking solution. Its combination of gigabit copper ports and SFP uplinks supports both high-speed local connections and fiber backbones, making it ideal for office networks, campus networks, or small enterprise deployments. The switch’s advanced management features, including VLAN, QoS, and link aggregation, ensure efficient traffic handling and optimized network performance.
This switch is a dependable choice for organizations seeking high-speed, flexible, and fully managed network connectivity.
