Haydon HAY-RJ45COUPLERSH Fully Shielded RJ45 Inline Coupler – Cat5e/Cat6 Female to Female Ethernet Adapter
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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Haydon HAY-RJ45COUPLERSH Fully Shielded RJ45 Inline Coupler – Cat5e/Cat6 Female to Female Ethernet Adapter
The Haydon HAY-RJ45COUPLERSH Fully Shielded RJ45 Inline Coupler is a professional female-to-female RJ45 (8P8C) Ethernet adapter designed to securely join two terminated network patch leads. Compatible with both Cat5e and Cat6 shielded Ethernet cables, it provides a simple and reliable solution for extending network connections without the need to re-terminate cables.
Featuring a fully shielded metal construction, the coupler helps maintain shielding continuity throughout the cable run, reducing the effects of electromagnetic interference (EMI) and radio frequency interference (RFI). This makes it ideal for use in professional networking environments, CCTV installations, IP surveillance systems, telecommunications, server rooms and structured cabling applications where dependable signal integrity is essential.
The standard RJ45 female-to-female (8P8C) configuration enables fast, plug-and-play installation by simply connecting two pre-terminated Ethernet patch leads. No specialist tools or cable termination are required, making it an excellent choice for extending cable runs, performing temporary network installations, relocating equipment or carrying out maintenance work.
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