Ajax MotionCam U Jeweller
- CCTV Lens Guide
- Hard Drive Size Guide
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, frame rate settings, and whether you have H.265 encoding enabled or not to save space (We advise turning it on to double the capacity shown below with ease).
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 (to perhaps double or more these figures again).
|
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 2 Terabytes for a 4 x 4/5MP HD camera setup, as this should give you approx 2 weeks using H.265 @ 20fps and that is on continuous, not motion-detected recording.
(You may only require the full 25 frames per second on certain cameras if things are fast-moving - ie above a till)
You can also use the Hikvision online calculator to work out what works best for you specifically: https://tools.hikvision.com/ca...
(All of our hard drives come fitted and are CCTV-specific from one of the major brands)
The Ajax MotionCam U Jeweller is a wireless PIR motion detector with a built-in camera, designed to comply with UK security standards while delivering lightning-fast visual verification. When motion is detected, it captures and transmits a series of photos to the Ajax app within 9 seconds¹, enabling users and security companies to instantly verify alarms. HDR technology ensures clear, detailed images in challenging lighting, and built-in IR illumination allows for visibility in complete darkness. These features help reduce unnecessary patrol callouts and give users peace of mind.
MotionCam U Jeweller detects movement up to 12 metres away and offers pet immunity for animals up to 20 kg and under 50 cm tall. It supports features such as Photo on Alarm, Photo on Demand, Photo by Scenario, and Photo by Schedule. The Fresnel lens and SmartDetect software algorithm distinguish between human movement, pets, and environmental interference, while temperature compensation maintains performance in all weather conditions. The result is accurate detection with minimal false alarms.
Using Ajax’s Jeweller and Wings radio protocols, the detector provides up to 1,700 metres of communication range in open space, with encrypted two-way transmission, frequency hopping, and jamming protection. Wings handles image transmission to ensure photo delivery even in challenging signal conditions. Powered by pre-installed, factory-tested batteries, the device operates for up to five years, with advance low-battery alerts to avoid downtime.
Installation is quick with the SmartBracket mounting panel and QR code pairing, requiring no disassembly. All configurations can be managed remotely via Ajax apps, reducing on-site visits. Fully compliant with EN 50131 Grade 2 and PD 6662:2017, MotionCam U Jeweller is ideal for residential, commercial, and industrial sites where rapid, visual alarm verification is essential.
Key Features:
• Wireless PIR motion detection up to 12 m with photo verification in under 9 seconds¹
• HDR technology and IR illumination for clear images in any lighting
• Pet immunity for animals up to 20 kg and under 50 cm tall
• Up to 5 years battery life with pre-installed, tested batteries
• Secure Jeweller and Wings communication with 1,700 m range, encryption, and jamming protection
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