Uniview Dual-Lens AI Smart Video Doorbell with 3MP+2MP Cameras, WiFi 6, Two-Way Audio & Package Detection (UV-ED-525B-WB)
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 Dual-Lens AI Smart Video Doorbell with 3MP+2MP Cameras, WiFi 6, Two-Way Audio & Package Detection (UV-ED-525B-WB)
The UV-ED-525B-WB is an advanced dual-lens smart video doorbell designed for complete front-door surveillance. It features a 3MP main camera for visitor identification and a 2MP downward-facing camera to monitor packages at the doorstep, ensuring no blind spots. With built-in AI analytics, it can detect humans, motion, and package deliveries, sending instant alerts to the UNV-Link app. The device supports WiFi 6 for stable connectivity, built-in storage for recording, and seamless integration with Uniview NVR systems. Its two-way audio system allows real-time communication with visitors, making it ideal for modern home and small office security.
Key Features
- Dual-lens system: 3MP + 2MP cameras
- AI human, motion & package detection
- Smart alerts to mobile app (UNV-Link)
- WiFi 6 dual-band connectivity (2.4GHz / 5GHz)
- Bluetooth-assisted quick setup
- Built-in microphone + speaker (two-way audio)
- HDR / WDR imaging for clear backlight performance
- IR + white light night vision support
- Supports mechanical & wireless chime
- Built-in 8GB eMMC storage (no SD required)
- Cloud + NVR integration support
- Motion-triggered recording and notifications
- IP65 weather-resistant design
- Easy installation with bracket mounting system
Ideal Applications
Perfect for industrial zones, parking lots, retail stores, warehouses, and public areas.
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