Uniview 16-Channel Dual HDD AI XVR Recorder with 4K Output, Smart Motion Detection (UMD) & Multi-Format Camera Support (UV-XVR302-16Q3)
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 16-Channel Dual HDD AI XVR Recorder with 4K Output, Smart Motion Detection (UMD) & Multi-Format Camera Support – UV-XVR302-16Q3
The UV-XVR302-16Q3 is a high-performance 16-channel hybrid video recorder designed for professional and large-scale surveillance systems. It supports a wide range of camera formats including TVI, AHD, CVI, CVBS, and IP cameras, allowing seamless integration of both analogue and modern IP surveillance devices. With dual SATA HDD support and advanced H.265 compression, it ensures long-term storage efficiency while maintaining high-quality video recording. The system provides 4K HDMI output for clear monitoring, along with remote access through mobile and CMS software. Built-in AI functions such as Ultra Motion Detection (UMD), intrusion detection, and face detection enhance security accuracy and reduce false alarms, making it ideal for commercial complexes, industrial sites, warehouses, and enterprise-level installations.
Key Features
- 16-channel hybrid XVR recorder (analogue + IP support)
- Supports TVI / AHD / CVI / CVBS / IP cameras
- H.265 / H.264 video compression
- Dual HDD support (up to 24TB per HDD)
- 4K HDMI output for high-resolution monitoring
- Smart AI features: UMD, intrusion detection, face detection
- Motion detection and intelligent event alerts
- Remote live view and playback via mobile app
- Supports up to 24 IP channels (configuration dependent)
- Audio over coax support (TVI cameras only)
- 1 Gbps network interface for stable streaming
- ONVIF & RTSP compatibility
- Multiple alarm I/O ports (4 input / 1 output)
- USB 3.0 + USB 2.0 ports for backup/export
- Ideal for enterprise and large surveillance systems
Ideal Applications
Perfect for industrial zones, parking lots, retail stores, warehouses, and public areas, it combines intelligent detection, full-colour clarity, and active deterrence for complete, always-on protection.
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