Uniview XVR 4-Channel Hybrid DVR Recorder with AI Motion Detection, H.265 Compression & Multi-Camera Support (UV-XVR301-04G3)
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 XVR 4-Channel Hybrid DVR Recorder with AI Motion Detection, H.265 Compression & Multi-Camera Support
The UV-XVR301-04G3 is a compact 4-channel hybrid video recorder designed for flexible CCTV surveillance systems. It supports multiple camera formats including TVI, AHD, CVI, CVBS, and IP cameras, making it suitable for upgrading or expanding existing analog systems. With H.265 video compression, it reduces storage usage while maintaining high-quality recording. The device supports real-time recording, playback, and remote viewing, along with intelligent motion detection and basic AI smart functions. Its single SATA interface allows connection of up to 8TB storage, making it ideal for small to medium residential, retail, and office security setups.
Key Features
- 4-channel hybrid XVR recorder
- Supports TVI / AHD / CVI / CVBS / IP cameras
- H.265 / H.264 video compression
- AI motion detection (UMD support)
- Supports up to 4/6 IP camera channels (depending configuration)
- HDMI & VGA output up to 1080p
- Remote viewing via mobile & CMS software
- 1 SATA interface (supports up to 8TB HDD)
- Audio over coax support (for compatible cameras)
- ONVIF & RTSP compatibility
- Compact 1U design for easy installation
- Low power consumption (≤8W without HDD)
Ideal Applications
Perfect for industrial zones, parking lots, retail stores, warehouses, and public areas, it's combines intelligent detection, full-color clarity, and active deterrence for complete, always-on protection.
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