Ruijie RG-NIS3100-4GT2SFP-HP 6-Port Layer 2 Cloud Managed Industrial Gigabit PoE+ Switch with Dual SFP Uplinks
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)
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Ruijie RG-NIS3100-4GT2SFP-HP 6-Port Layer 2 Cloud Managed Industrial Gigabit PoE+ Switch with Dual SFP Uplinks
The Ruijie RG-NIS3100-4GT2SFP-HP is an industrial-grade Layer 2 managed switch designed to deliver secure and reliable Gigabit networking in demanding environments. Ideal for industrial automation, transportation, intelligent surveillance and outdoor infrastructure, it combines robust hardware with comprehensive Layer 2 features and cloud-based management. Its IP40-rated aluminium housing, conformal coating and industrial design ensure dependable operation in harsh conditions. The switch provides 4 × 10/100/1000Mbps Gigabit RJ45 PoE+ ports and 2 × Gigabit SFP fibre uplink ports for flexible network expansion. Supporting IEEE 802.3af/at PoE+, each PoE port delivers up to 30W, with a maximum 120W PoE budget (depending on the connected DC power supply), making it suitable for powering IP cameras, wireless access points and industrial Ethernet devices. It also supports 250-metre Extend Mode for long-distance CCTV deployments. The RG-NIS3100-4GT2SFP-HP incorporates a comprehensive range of Layer 2 networking features, including VLAN, Static Link Aggregation, STP/RSTP, ERPS, IGMP Snooping, LLDP/LLDP-MED, ACL, DHCP Snooping, Port Mirroring, Loop Prevention and 802.1X authentication. These features improve network resilience, security and performance for mission-critical applications.
KEY FEATURES
- 6-port Layer 2 cloud managed industrial switch
- 4 × 10/100/1000Mbps Gigabit PoE+ RJ45 ports
- 2 × Gigabit SFP fibre uplink ports
- IEEE 802.3af/at PoE+ support
- Up to 30W PoE output per port
- Maximum 120W PoE budget (depending on DC input voltage)
- 250-metre Extend Mode
- 12Gbps switching capacity
- 8.92Mpps forwarding rate
- 8K MAC address table
- Supports up to 4,094 VLANs
- Static Link Aggregation
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