Xiaomi Smart Doorbell 4 Infrared Night Vision 3MP HD 160° Wide Angle Smart Home Wireless Cat Eye Camera Work for Mi Home APP CN

The Xiaomi Smart Doorbell 4 is a next-generation wireless video doorbell designed to bring convenience, safety, and smart connectivity to your home. With its 3MP HD resolution and 160° ultra-wide angle camera, you can clearly monitor everything happening outside your door. The built-in infrared night vision ensures visibility even in complete darkness, while the human infrared sensor automatically triggers recording and alerts when motion is detected within 5 meters.

Powered by a 5100mAh rechargeable battery, this smart doorbell is built for long-lasting performance. Integrated with the Mi Home APP (region set to Chinese Mainland), you can personalize motion sensitivity, recording duration, trigger intervals, and access cloud-based video storage. With real-time notifications, two-way audio, and a secure dismantling alarm system, it’s an essential upgrade for smart home security.

Features

• 3MP HD Video Quality – Enjoy sharp, clear video monitoring for better home security.

• 160° Ultra-Wide Field of View – Covers more area and reduces blind spots at your front door.

• Infrared Night Vision – Automatic detection in low-light or dark environments for 24/7 surveillance.

• Human Infrared Sensor – Detects motion up to 5 meters and instantly triggers recording.

• Smart Motion Detection – Sends push notifications to your phone when activity is detected.

• Cloud Video Storage – 3-day rolling video storage included; optional membership for extended storage.

• 5100mAh Long-Lasting Battery – Optimized power consumption with customizable recording intervals.

• Two-Way Communication – Talk to visitors in real time via the Mi Home APP.

• Tamper Alarm Protection – Built-in anti-dismantling alarm ensures secure installation.

• Customizable Settings – Adjust sensitivity, shooting duration, and intervals to match your needs.

• Easy Installation – Mount with adhesive backing (allow 24 hours to cure) or screws for permanent setup.

• Smart Doorbell Receiver – Included plug-in receiver ensures stable 433MHz wireless connection.

Specifications

Product Name: Xiaomi Smart Doorbell 4
Model: MJML04BY
Camera Resolution: 3MP HD
Lens Angle: 160° wide angle
Motion Detection: Human infrared sensor (up to 5m)
Wireless Connectivity: Wi-Fi IEEE 802.11 b/g/n/ax 2.4GHz, low-power Bluetooth, 433MHz
Battery Capacity: 5100mAh rechargeable lithium battery
Rated Input: 5V⎓2A
Storage: Cloud-based video storage (3-day rolling, extended plans available)
Operating Temperature: -10℃ ~ 45℃
Charging Temperature: 0℃ ~ 45℃
Supported Systems: Android 8.0 or iOS 12.0 and above
Execution Standard: GB 4943.1-2022

Receiver Parameters:

• Model: MJJSQ01BY

• Input: 100-240V ~ 50/60Hz, 0.04A

• Connection: 433MHz

• Operating Temp: -10℃ ~ 45℃

• Humidity: 10% – 90% RH (non-condensing)

Important Usage Notes

• Please download and install the latest version of the Mi Home APP before use.

• Ensure the Mi Home APP region is set to Chinese Mainland for proper connectivity.

• Recommended installation height is 1.5 meters; avoid mounting on metal surfaces.

• Wait 24 hours after adhesive installation for full adhesion strength.

• The detection distance of the infrared sensor is up to 5 meters, with adjustable sensitivity via the app.

• Battery life depends on video recording frequency and personalized settings such as trigger intervals and maximum recording length.

• Cloud storage includes 3-day rolling video service; extended cloud membership is available for longer storage.

• Always turn off the dismantling alarm before removing the doorbell for charging.

• During charging, ensure the port is not in an enclosed space and take waterproof precautions if charging outdoors.

• For safety, monitor lithium battery charging closely.

FAQ

Q1: Does the Xiaomi Smart Doorbell 4 support 5GHz Wi-Fi?
No, it only supports 2.4GHz Wi-Fi networks.

Q2: Can I use this doorbell with the global version of the Mi Home APP?
This is the Chinese version, and it requires setting the region to Chinese Mainland in the Mi Home APP.

Q3: How long does the battery last on a single charge?
Battery life varies depending on motion detection frequency and recording settings, but the 5100mAh battery is optimized for long-lasting use.

Q4: What happens when motion is detected?
When the doorbell detects a person within 5 meters, it automatically records video, sends a phone alert, and uploads the clip to the cloud.

Q5: Is cloud storage free?
Yes, the device comes with a 3-day rolling cloud storage plan. For longer retention, a paid cloud membership is required.