Xiaomi Smart Doorbell 3 – MJML05-FJ 2K Ultra HD, 5200mAh Battery, AI Motion Detection, Night Vision, Two-Way Audio

The Xiaomi Smart Doorbell 3 is a wireless smart video doorbell designed to provide clearer monitoring of your front door and surrounding entrance area. It combines 2K ultra-clear video, a 5200mAh rechargeable battery, 180° ultra-wide viewing, AI human detection, motion notifications, infrared night vision and two-way audio in a compact doorbell design.

The doorbell uses a 3-megapixel high-definition image sensor with an F2.0 lens and a diagonal 180° ultra-wide viewing angle, helping capture a wider view of the area in front of your door.

Its built-in 5200mAh lithium battery is designed for extended operation. Xiaomi states that laboratory testing achieved up to approximately 4.8 months of battery life under a specific usage scenario, equivalent to around three charges per year. Actual battery life depends on motion activity, temperature, network conditions and usage.

Common Problems with Traditional Doorbells

A conventional doorbell may tell you that someone is at the door, but it cannot necessarily show you who is there or what happened outside.

Common problems include:

• No visual confirmation of visitors
• Limited viewing angles
• No night-time monitoring
• No motion notifications
• Frequent battery replacement
• No remote smartphone viewing
• No two-way communication
• Difficulty monitoring deliveries
• Limited awareness of activity around the entrance

Smart Solution

The Xiaomi Smart Doorbell 3 combines a traditional doorbell with smart video surveillance.

When motion is detected near the entrance, the doorbell can automatically record activity and send a notification to your smartphone. Xiaomi’s human-body sensor and AI human-shape recognition technology are designed to identify human activity and help reduce unnecessary alerts.

You can also view the doorway remotely and communicate with visitors through the built-in two-way audio system.

Key Features

2K Ultra HD Video

The Xiaomi Smart Doorbell 3 records in 2K resolution, providing more detail than standard lower-resolution doorbells. Xiaomi specifies a 3MP high-definition sensor for capturing clearer images around the entrance.

The higher resolution can help you see details such as visitors, packages and movement around the doorway more clearly.

180° Ultra-Wide Viewing Angle

The doorbell features a diagonal 180° ultra-wide field of view, helping cover a broad area directly in front of the entrance. This can be useful for monitoring visitors standing close to the door as well as activity around the surrounding doorway.

5200mAh Rechargeable Battery

A built-in 5200mAh lithium battery powers the wireless doorbell.

Xiaomi states that the battery can provide up to approximately 4.8 months of use under laboratory conditions, with the company describing the typical requirement as charging around three times per year under its test scenario. Actual results will vary depending on usage and environment.

AI Human Detection

The Smart Doorbell 3 combines a human-body sensor with AI human-shape recognition to detect human activity around the doorway.

When abnormal movement is detected, the system can send an alert to your smartphone.

Smart Motion Detection

The doorbell supports smart motion monitoring and can automatically record detected movement.

This is useful for monitoring:

• Visitors
• Delivery personnel
• People approaching the entrance
• Unexpected movement
• Activity around the front door

Infrared Night Vision

The Xiaomi Smart Doorbell 3 uses 940nm infrared illumination to provide night vision in low-light and dark environments. Xiaomi specifies four built-in high-power 940nm infrared lights.

Because 940nm infrared light is invisible to the human eye, the doorbell can provide night monitoring without relying on visible illumination.

Two-Way Audio

The built-in microphone and speaker allow you to communicate with visitors through your smartphone.

You can answer the door remotely, communicate with delivery personnel or ask visitors to wait even when you are not physically near the entrance.

Voice Changer

Xiaomi also provides a voice-changing function during two-way communication. The official product page demonstrates options such as original voice, clown voice and old-man voice.

This feature can provide an additional layer of privacy when communicating with unfamiliar visitors.

Custom Auto-Reply

The Smart Doorbell 3 supports personalised automatic replies. You can configure a recorded welcome or response message that can play when a visitor presses the doorbell.

72-Hour Free Cloud Storage

The doorbell supports free rolling 72-hour cloud storage for motion-triggered video clips according to Xiaomi’s official product information.

This allows you to review recent motion-triggered recordings without requiring a memory card. Older recordings are automatically removed as the rolling storage period continues.

Wireless Indoor Chime

A wireless electronic chime is included with the doorbell.

The chime has four volume settings and can continue to ring even when the doorbell is disconnected from the internet, according to Xiaomi’s product information.

USB Type-C Charging

The 5200mAh battery can be recharged using the included USB Type-C charging cable, making charging more convenient than replacing disposable batteries.

Two Installation Options

The doorbell can be installed using either:

• Adhesive mounting
• Expansion screws

Xiaomi recommends adhesive installation for suitable smooth surfaces such as smooth wood, metal and ceramic tile, while screw installation can be used for suitable masonry walls.

Benefits

• Clear 2K video monitoring
• 3MP high-definition image sensor
• 180° ultra-wide viewing angle
• Large 5200mAh rechargeable battery
• Extended battery life
• AI human detection
• Smart motion notifications
• 940nm infrared night vision
• Two-way voice communication
• Voice-changing function
• Custom automatic replies
• Free rolling 72-hour cloud storage for motion-triggered clips
• Wireless indoor chime included
• USB Type-C charging
• Remote smartphone monitoring
• Adhesive or screw installation options

Perfect For

The Xiaomi Smart Doorbell 3 is ideal for:

• Homes
• Apartments
• Families
• Front-door monitoring
• Package and delivery monitoring
• Rental properties
• Homeowners
• Small offices
• Smart-home users
• People who want wireless video-doorbell monitoring
• Users who want remote visitor communication

Why Choose Xiaomi Smart Doorbell 3?

The Xiaomi Smart Doorbell 3 combines the convenience of a wireless doorbell with the functionality of a smart security camera.

Its 2K video, 180° viewing angle and AI human detection help provide a broader and more detailed view of activity near the entrance. The 5200mAh battery reduces the need for frequent charging, while Type-C charging makes recharging straightforward.

The included wireless chime, two-way communication and 72-hour rolling cloud storage further improve everyday convenience.

Xiaomi Smart Doorbell 3 vs Traditional Doorbell

How to Use Xiaomi Smart Doorbell 3

Step 1: Choose the Installation Location

Select a suitable position beside your entrance where the camera can capture the desired doorway area.

Make sure the mounting surface is strong and appropriate for the selected installation method.

Step 2: Install the Mounting Base

Attach the mounting base using the supplied adhesive or screws, depending on the surface.

For screw installation, follow the manufacturer’s mounting instructions carefully. Xiaomi specifies a 6mm hole diameter and approximately 30mm hole depth for the expansion-screw installation method described in its FAQ.

Step 3: Attach the Doorbell

Once the mounting base is securely installed, attach the Smart Doorbell 3 to the base according to the installation instructions.

Step 4: Charge the Battery

Use the supplied USB Type-C cable to charge the built-in 5200mAh battery when required.

Step 5: Connect to Xiaomi Home

Set up the doorbell through the compatible Xiaomi smart-home application and connect it to your network.

Step 6: Configure Motion Detection

Enable the required motion and human-detection functions and configure smartphone notifications.

Step 7: Install the Indoor Chime

Place the wireless chime inside your home where it can be easily heard.

Step 8: Test the Doorbell

Press the doorbell and walk through the monitored area to confirm that video monitoring, notifications, the chime and two-way audio are working correctly.

Smart Doorbell Applications

Monitor Visitors

See who is standing at your door before opening it.

Monitor Deliveries

Use the camera and motion notifications to stay informed when delivery personnel approach your entrance.

Home Security

Receive notifications when human activity is detected around the monitored doorway.

Night-Time Monitoring

Use 940nm infrared night vision to monitor activity in low-light conditions.

Remote Communication

Talk to visitors through the smartphone app using two-way audio.

Apartment Monitoring

The wide-angle view can help monitor activity in front of apartment doors and entrances.

Night Vision

The Smart Doorbell 3 automatically switches to night vision according to surrounding light conditions.

It uses 940nm infrared light, which is invisible to the naked eye. Xiaomi specifies four built-in high-power infrared lights for low-light and dark-environment monitoring.

This makes the doorbell suitable for monitoring your entrance during both daytime and nighttime.

Battery & Charging

The built-in 5200mAh lithium battery is one of the main advantages of the Xiaomi Smart Doorbell 3.

Xiaomi’s laboratory test reported approximately 4.8 months of battery life under a standard test scenario involving 20 ten-second videos per day at approximately 25°C. The company notes that actual battery life can vary according to usage, environment and individual product conditions.

Charging Features

• 5200mAh built-in lithium battery
• Rechargeable design
• USB Type-C charging
• No disposable battery replacement required
• Extended operating time

Cloud Storage

The Xiaomi Smart Doorbell 3 provides 72-hour rolling cloud storage for motion-triggered video clips according to Xiaomi’s official product information.

This means recent motion-triggered recordings can be reviewed without purchasing a memory card or subscribing to a cloud plan for that basic rolling-storage feature.

Important: Xiaomi’s FAQ states that the Smart Doorbell 3 does not support NAS storage.

Privacy & Security

The Smart Doorbell 3 is designed to keep the doorbell and associated Xiaomi account linked to the cloud service. Xiaomi states that even if the doorbell is forcibly removed or stolen, another person cannot simply pair it with their account and use it.

For privacy-conscious users, two-way audio also includes a voice-changing function.

Cleaning & Maintenance

Regular maintenance can help keep the camera lens and doorbell working properly.

1. Turn off or disconnect the device before cleaning when appropriate.
2. Use a soft, dry microfiber cloth to clean the camera lens.
3. Keep the lens free from dust and fingerprints.
4. Do not spray water or cleaning liquid directly onto the device.
5. Keep the USB Type-C charging port dry.
6. Check the mounting base periodically to ensure it remains secure.
7. Avoid damaging the camera lens or sensors.
8. Keep the device away from excessive moisture.

Important Usage Tips

• Fully charge the battery before extended use.
• Use an appropriate USB Type-C power source for charging.
• Keep the camera lens clean.
• Install the mounting base securely.
• Test motion notifications after installation.
• Keep the wireless chime within a suitable indoor location.
• Do not install the Smart Doorbell 3 in an exposed outdoor position.
• Do not assume the doorbell is waterproof.
• Keep the charging port protected from moisture.
• Check your local Xiaomi Home/Mi Home region compatibility before purchase.
• Battery life varies according to motion frequency, network conditions, temperature and settings.

Important: Xiaomi’s official product page specifically states that the Smart Doorbell 3 is not waterproof and should not be used in outdoor environments. It is therefore important not to confuse this model with the later Smart Doorbell 3S, which has an IP65 rating.

Product Specifications

* Model-number note: Xiaomi’s official regional specifications identify Smart Doorbell 3 as MJML06-FJ. Your supplied title uses MJML05-FJ, so verify the model printed on your actual stock/package before publishing the SKU.

What’s in the Box

The official Xiaomi package typically includes:

• 1 × Xiaomi Smart Doorbell 3
• 1 × Wireless Chime
• 1 × Type-C Charging Cable
• 1 × Mounting Base
• 1 × Removal Pin
• 1 × User Manual
• 1 × Screw Set
• 1 × Attention/Warning Sticker
• 1 × Warranty Notice

Xiaomi’s official FAQ lists these package contents for the Smart Doorbell 3.

Who Should Buy This Product?

The Xiaomi Smart Doorbell 3 is suitable for people who want a wireless smart doorbell with high-resolution video and intelligent motion monitoring.

It is especially suitable for:

• Homeowners
• Apartment residents
• Families
• Parents
• Delivery monitoring
• Smart-home users
• Small offices
• Rental properties
• People who want remote visitor communication
• Users who prefer rechargeable wireless devices

Why Buy from AIYOZON?

When you purchase the Xiaomi Smart Doorbell 3 from AIYOZON, you can choose a smart wireless doorbell designed for detailed entrance monitoring, AI human detection, night vision and remote two-way communication.

Before placing your order, check the exact model number, regional version, included accessories, warranty terms and Xiaomi Home/Mi Home compatibility.

Frequently Asked Questions

Is Xiaomi Smart Doorbell 3 2K?

Yes. Xiaomi Smart Doorbell 3 supports 2K resolution and uses a 3MP high-definition image sensor.

How large is the Xiaomi Smart Doorbell 3 battery?

It has a built-in 5200mAh rechargeable lithium battery.

How long does the Xiaomi Doorbell 3 battery last?

Xiaomi reports approximately 4.8 months under its laboratory test conditions, with 20 ten-second videos recorded per day at approximately 25°C. Actual battery life varies with usage and environment.

Does Xiaomi Smart Doorbell 3 have night vision?

Yes. It uses 940nm infrared night vision with four built-in high-power infrared lights.

What is the viewing angle of Xiaomi Smart Doorbell 3?

The doorbell has a diagonal 180° ultra-wide viewing angle.

Does Xiaomi Smart Doorbell 3 detect people?

Yes. It uses a human-body sensor and AI human-shape recognition technology to detect human activity and provide notifications.

Does Xiaomi Doorbell 3 support motion detection?

Yes. It supports smart motion detection and can automatically record detected activity and notify your smartphone.

Can I talk to visitors through Xiaomi Doorbell 3?

Yes. It supports two-way audio communication, allowing you to communicate with visitors through your smartphone.

Does Xiaomi Smart Doorbell 3 have a voice changer?

Yes. Xiaomi includes a voice-changing feature for two-way communication.

Does Xiaomi Doorbell 3 include a chime?

Yes. A wireless electronic chime is included in the package, with four volume settings.

Does Xiaomi Smart Doorbell 3 support cloud storage?

Yes. Xiaomi provides 72-hour rolling cloud storage for motion-triggered video clips according to its official product information.

Does Xiaomi Smart Doorbell 3 support a microSD card?

The official Xiaomi FAQ for this model lists cloud storage and states that NAS is not supported. It does not list microSD storage as a supported storage method, so this model should not be advertised as microSD-compatible without verifying the exact regional variant.

Is Xiaomi Smart Doorbell 3 waterproof?

No. Xiaomi’s official product page states that the Smart Doorbell 3 is not waterproof and should not be used in outdoor environments.

How do I charge Xiaomi Smart Doorbell 3?

The built-in 5200mAh battery is rechargeable through the USB Type-C charging port using the supplied charging cable.

What is the model number of Xiaomi Smart Doorbell 3?

Xiaomi’s official regional specification page identifies the model as MJML06-FJ. If your physical stock is marked MJML05-FJ, verify the exact version before listing it online.

Final Verdict

The Xiaomi Smart Doorbell 3 is a feature-rich wireless video doorbell designed for convenient front-door monitoring. Its combination of 2K video, 5200mAh rechargeable battery, 180° ultra-wide view, AI human detection, motion alerts, 940nm infrared night vision, two-way audio and wireless chime makes it suitable for everyday entrance monitoring.

The extended battery design reduces the need for frequent charging, while the 72-hour rolling cloud storage provides a convenient way to review recent motion-triggered recordings.

🔔 Upgrade Your Front-Door Security

Monitor your entrance, communicate with visitors and stay informed about activity around your door.

✔ 2K Ultra HD Video
✔ 3MP High-Definition Sensor
✔ 5200mAh Rechargeable Battery
*✔ Up to Approx. 4.8-Month Battery Life **
✔ 180° Ultra-Wide Viewing Angle
✔ AI Human Detection
✔ Smart Motion Notifications
✔ 940nm Infrared Night Vision
✔ Two-Way Audio
✔ Voice Changer
✔ 72-Hour Rolling Cloud Storage
✔ Wireless Indoor Chime Included
✔ USB Type-C Charging

👉 Order the Xiaomi Smart Doorbell 3 from AIYOZON and add smarter, clearer and more convenient monitoring to your front door.