Ruijie Reyee RG-NBS5100-24GT4SFP-P 24-Port L3 Managed GbE PoE+ Access Switch, Pre-Configured 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 Reyee RG-NBS5100-24GT4SFP-P – 24-Port Gigabit PoE+ Managed Switch with 4 SFP Uplinks
Reliable, Powerful, and Fully Managed Networking for Growing Businesses
Upgrade your network with the Ruijie Reyee RG-NBS5100-24GT4SFP-P, a versatile Layer-3 managed PoE+ switch designed for modern offices, campuses, and surveillance networks. With 24 Gigabit PoE+ ports and 4 SFP uplinks, this switch provides seamless connectivity, power for your devices, and advanced network management features — all in a compact, rack-mountable form.
Key Features:
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24 Gigabit PoE+/PoE Ports + 4 SFP Uplinks – Power IP cameras, Wi-Fi access points, VoIP phones, and other PoE-enabled devices directly through the switch while connecting multiple devices at full gigabit speeds.
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Layer-3 Routing Support – Efficiently manage inter-VLAN traffic and complex network topologies with static routing, RIP, and OSPF protocols.
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High Switching Capacity – 56 Gbps switching capacity and 42 Mpps forwarding rate ensure smooth network performance even under heavy load.
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Advanced Network Management – Manage your network with ease via web, cloud, SNMP, or mobile app interfaces.
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Enhanced Security & Control – VLANs, Voice VLAN, ACLs, QoS, port isolation, 802.1X authentication, IGMP snooping, and port mirroring keep your network organized and secure.
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Robust & Reliable Design – 6 kV surge protection, dual-fan cooling, and a metal rack-mountable chassis ensure long-term stability.
Ideal Use Cases:
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SME Offices & Multi-Site Networks – Connect desktops, printers, phones, and access points with reliable PoE power and high-speed gigabit performance.
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IP Surveillance Systems – Power cameras directly from the switch and use fiber SFP uplinks for backbone connectivity across buildings.
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Wireless Networks & Access-Layer Deployments – Efficiently manage VLANs for guest and secure networks while powering Wi-Fi APs through PoE+.
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Campus or Multi-VLAN Networks – Simplify inter-VLAN routing without needing additional routers, saving time and costs.
Why Choose RG-NBS5100-24GT4SFP-P?
The RG-NBS5100-24GT4SFP-P combines power, performance, and manageability in a single, cost-effective switch. Perfect for businesses and institutions that require scalable PoE+ capabilities, advanced Layer-3 features, and reliable enterprise-grade connectivity. Whether for offices, campuses, or surveillance networks, this switch delivers a seamless networking experience with maximum flexibility and minimal hassle.
Power your devices. Simplify your network. Grow your business.
