AXIS 30 W Single Port Midspan AC/DC (02172-003) – PoE+ Injector for IP Cameras & Network Devices
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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AXIS 30 W Single Port Midspan AC/DC (02172-003) – PoE+ Injector for IP Cameras & Network Devices.
The AXIS 30 W Single Port Midspan is designed to power PoE-enabled devices when a network switch does not provide sufficient PoE capability. It injects both power and data through a single Ethernet cable, supporting Gigabit speeds (10/100/1000 Mbps) for stable communication.
With support for IEEE 802.3af and IEEE 802.3at (PoE+), it is compatible with a wide range of AXIS cameras and network devices requiring up to 30W power. The unit is plug-and-play, requiring no configuration, and is typically used in indoor surveillance installations or cabinet-based setups where reliable midspan power delivery is needed.
Key Features:
Delivers up to 30W PoE power output
Supports IEEE 802.3af / 802.3at (PoE / PoE+)
Single-port Gigabit Ethernet injector (10/100/1000 Mbps)
AC-powered plug-and-play installation
No configuration required
Ideal for AXIS IP cameras and network devices
Reduces need for PoE-enabled switches
Stable power + data transmission over one cable
Suitable for indoor or cabinet installations
Reliable for surveillance system deployments
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