Uniview 6-Port Unmanaged PoE Ethernet Switch with 4 PoE Ports, 250m Extend Mode & Metal Housing (UV-NSW2020-6T-POE-IN-V2)
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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Uniview 6-Port Unmanaged PoE Ethernet Switch with 4 PoE Ports, 250m Extend Mode & Metal Housing (UV-NSW2020-6T-POE-IN-V2)
The UV-NSW2020-6T-POE-IN-V2 is a professional unmanaged PoE Ethernet switch designed for IP surveillance and networking applications. It features 6 Fast Ethernet ports, including 4 IEEE 802.3af/at PoE ports capable of powering IP cameras, wireless access points, and other PoE devices directly through Ethernet cables. With support for Extend (Surveillance) mode, the switch can transmit data and power up to 250 meters, making it ideal for long-distance CCTV installations. Its fanless all-metal housing ensures silent operation, durability, and reliable 24/7 performance for homes, offices, shops, and surveillance systems.
Key Features
- 6 × 10/100Mbps RJ45 Ethernet ports
- 4 × PoE+ ports (IEEE 802.3af/at)
- Total PoE power budget up to 65W
- Up to 30W output per PoE port
- Extend surveillance mode supports transmission up to 250m
- Plug-and-play unmanaged operation
- Secure mode isolates downlink traffic for better security
- Intelligent traffic control & buffer optimization
- 1.2Gbps switching capacity
- Fanless silent cooling design
- Durable all-metal housing
- Compact desktop installation design
- Stable 24/7 operation for CCTV systems
- Ideal for IP cameras, NVR systems, and networking applications
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