The Xiaomi Solar Outdoor Camera BW400 Pro Set is a wire-free outdoor security system combining 2.5K video, a built-in solar panel, a 10000mAh battery and intelligent event detection. Its 132° field of view, full-colour night vision and IP66 protection make it suitable for monitoring entrances, driveways, gardens, garages and other outdoor areas.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Xiaomi |
| Product Name | Xiaomi Solar Outdoor Camera BW400 Pro Set |
| Model | BW400 Pro |
| Product Type | Solar-Powered Wireless Outdoor Security Camera |
| Video Resolution | 2.5K / 2560 × 1440 |
| Image Resolution | 4MP |
| Image Sensor | 1/2.7-Inch Sensor |
| Lens Aperture | f/1.6 |
| Viewing Angle | 132° Diagonal Field of View |
| Image Processing | Hardware-Level HDR |
| Night Vision | Infrared and Full-Colour Night Vision |
| Night Lighting | 4 LED Supplement Lights and 2 Infrared Lights |
| Battery Capacity | 10000mAh |
| Solar Charging | Built-In Solar Panel |
| Solar Conversion Efficiency | Up to 20% Under Test Conditions |
| Weather Protection | IP66 Dust and Water Resistance |
| AI Detection | Human, Vehicle, Animal and Package Detection |
| PIR Detection Distance | Up to Approximately 8m Under Test Conditions |
| Audio | Two-Way Voice Communication |
| Sound Pick-Up Distance | Up to Approximately 8m |
| Mobile App | Mi Home / Xiaomi Home |
| Local Storage | MicroSD Card up to 256GB Through the Base Station |
| Cloud Storage | Supported Where Available |
| Voice Assistant Support | Google Assistant and Amazon Alexa |
| Base Station Required | Yes |
Buyer Snapshot: Who Is This Camera Best For?
| A Good Choice For | Consider Another Camera If |
|---|---|
| Outdoor areas without existing power cables | You require continuous 24-hour recording |
| Entrances, gardens, balconies and driveways | You need a camera that connects directly to Wi-Fi |
| Users who want local AI detection | You require mechanical pan-and-tilt movement |
| Homes using the Xiaomi Home ecosystem | You need 4G connectivity without a local network |
| Event-based security alerts | You need integration with a professional NVR system |
The camera can be integrated into a broader collection of Smart Home gadgets, while its local recognition features may also interest users comparing practical Ai Gadgets.
How the Camera and Base Station Work Together
The BW400 Pro Set includes an outdoor camera and an indoor base station. The camera communicates wirelessly with the base station rather than connecting directly to the home router.
The base station manages the internet connection, local storage and communication with the Xiaomi Home app. It must remain connected to power and can connect to the router through Wi-Fi or an Ethernet cable.
This arrangement provides more stable outdoor communication, but the camera cannot be used as a completely independent Wi-Fi camera. Xiaomi recommends keeping the camera and base station within a suitable communication range with as few walls as possible.
What Makes the 2.5K Image Useful?
The 4MP sensor records at 2560 × 1440 resolution, providing more detail than standard 1080p video. Hardware-level HDR helps balance bright sunlight and darker shadowed areas, while the 132° field of view covers a broad outdoor scene without mechanical movement.
After dark, users can choose energy-efficient infrared monitoring or activate the LED supplement lights for colour footage. Full-colour night vision uses more battery power than infrared mode.
How Does Solar Charging Affect Battery Life?
The camera contains a 10000mAh rechargeable battery and an integrated solar panel. Under Xiaomi’s reference scenario, receiving at least two hours of direct sunlight per day can help maintain the battery during normal event-based use.
Battery performance depends on:
- Number of detected events
- Recording duration
- Night-vision mode
- Live-view frequency
- Signal strength
- Outdoor temperature
- Available direct sunlight
Heavy traffic, frequent live viewing or repeated nighttime alerts can reduce runtime considerably. The camera can also be manually charged through its protected USB charging port when necessary.
Which Events Can the AI System Detect?
The integrated AI chip can classify people, vehicles, animals and packages. When an enabled event type is detected, the system can record a clip and send a notification through the Xiaomi Home app.
Detection areas and sensitivity can be adjusted to reduce alerts from roads, neighbouring properties, moving trees or other irrelevant parts of the image. More information about selecting and positioning solar cameras is available in the AS2 Security Solar Camera Buying Guide.
Where Are Recordings Stored?
The indoor base station supports a MicroSD card of up to 256GB for local event recordings. Cloud storage is also available in supported regions, although storage duration, free services and subscription options can vary.
The BW400 Pro does not normally record continuously. It remains in a lower-power state and wakes when movement or another recognised event triggers recording. This design helps extend battery life but makes the camera less suitable for users who require uninterrupted 24-hour footage.
Xiaomi BW400 Pro vs 3MP 2K Floodlight PTZ Solar Camera
| Feature | Xiaomi BW400 Pro | 3MP 2K Floodlight PTZ Camera |
|---|---|---|
| Resolution | 4MP / 2.5K | 3MP / 2K |
| Viewing System | Fixed 132° Wide View | Motorised Pan and Tilt |
| Connectivity | Camera Connects Through Xiaomi Base Station | Available in Wi-Fi or 4G Versions |
| Smart Detection | Human, Animal, Vehicle and Package Recognition | PIR and Motion-Based Detection |
| Local Storage | Up to 256GB Through Base Station | Up to 128GB MicroSD |
| Smart Ecosystem | Xiaomi Home, Alexa and Google Assistant | UBox App |
| Best For | Xiaomi smart homes and accurate event alerts | Remote viewing angles and optional 4G access |
Choose the Xiaomi BW400 Pro when image detail, Xiaomi Home integration and classified AI alerts are the priorities. The Solar Powered Battery 3MP 2K Floodlight PTZ Camera is more suitable when mechanical rotation or a 4G version is required.
Five Installation Checks Before Mounting
- Confirm that the selected area receives enough direct sunlight.
- Check communication strength between the camera and indoor base station.
- Mount the camera high enough to discourage tampering but still capture useful detail.
- Avoid pointing the PIR sensor directly toward busy roads or moving branches.
- Close the charging-port cover securely before outdoor use.
The IP66 rating protects the camera against dust and outdoor water exposure, but the unit must not be immersed or left with the charging port open in wet conditions.
What Is Included in the Set?
The Xiaomi BW400 Pro Set includes one outdoor camera and one indoor base station. Mounting components, power accessories and regional package contents should be confirmed on the product box before installation.
FAQ
1. Does the Xiaomi BW400 Pro work without a permanent outdoor power cable?
Yes. The outdoor camera uses a 10000mAh rechargeable battery and an integrated solar panel. The indoor base station still requires a power connection.
2. What video resolution does the Xiaomi BW400 Pro support?
The camera records 4MP video at 2.5K resolution, equivalent to 2560 × 1440 pixels.
3. Can the camera record continuously for 24 hours?
No. It is designed primarily for event-triggered recording and enters a low-power state when no relevant movement is detected.
4. Does the Xiaomi BW400 Pro require a base station?
Yes. The camera must be paired with its indoor base station and cannot connect directly to Wi-Fi by itself.
5. Can the camera record at night?
Yes. It supports infrared night vision for lower power consumption and LED-assisted full-colour night vision for additional visual detail.
6. Where are the recordings stored?
Local recordings can be stored on a MicroSD card of up to 256GB installed in the base station. Regional cloud-storage options may also be available.
7. Which events can the AI detection system recognise?
The camera supports human, vehicle, animal and package detection, with enabled alerts delivered through the Xiaomi Home app.

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