Haydon HAY-PSUINLINE3.5A 12V DC 3.5A Inline CCTV Power Supply with UK Plug and 3.6m Lead
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-PSUINLINE3.5A 12V DC 3.5A Inline CCTV Power Supply with UK Plug and 3.6m Lead
The Haydon HAY-PSUINLINE3.5A is a high-quality 12V DC inline switch-mode power supply engineered to provide reliable power for CCTV cameras, digital video recorders, access control equipment and a wide range of low-voltage electronic devices. Designed for professional security installations, it combines stable performance, high efficiency and simple plug-and-play installation within a compact inline housing.
Operating from a universal 100–240V AC mains input, the power supply delivers a regulated 12V DC output with a maximum current of 3.5A, providing up to 42W of output power. The regulated output helps maintain consistent voltage to connected equipment, ensuring reliable operation even during continuous use.
The unit is supplied complete with a UK Type G mains plug and an extended 3.6-metre power lead, providing greater flexibility when installing CCTV cameras or other equipment where mains sockets may not be located nearby. A standard 2.1mm centre-positive DC barrel connector allows quick connection to compatible devices without additional wiring, reducing installation time and complexity.
KEY FEATURES
- Regulated 12V DC output
- Maximum output current of 3.5A
- 42W maximum output power
- Universal 100–240V AC input
- High-efficiency switch-mode design
- UK Type G mains plug
- 3.6m integrated power lead
- 2.1mm centre-positive DC barrel connector
- Fixed regulated output voltage
- Low ripple and noise output
- Overload protection
- High electrical isolation
- Compact inline housing
- Ideal for CCTV cameras and security equipment
- Suitable for domestic and commercial installations
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