Xiaomi Smart Doorbell 4 Infrared Night Vision 3MP HD 160° Wide Angle Smart Home Wireless Ca…

Xiaomi Smart Doorbell 4 combines a doorbell button, camera and motion sensing in one battery-powered entrance device. The listing identifies a 3MP camera with a wide viewing angle around 160°, helping capture visitors standing close to the door and providing more context than a narrow conventional peephole camera.

Infrared night vision keeps visitors visible after dark, while human-related detection and app notifications are intended to reduce the need to check every movement manually. Two-way voice communication lets the user answer from a phone even when they are not standing by the door. The device is designed as a wireless installation, so it is useful where running new doorbell wiring would be inconvenient.

This version is explicitly a Mainland China Mi Home product. Xiaomi Home region selection is therefore an important buying consideration: the doorbell may need the Mainland China server and its associated plugin to pair and expose all features. A separate indoor chime may use its own short-range radio link while the doorbell uses Wi-Fi for app connectivity.

Cloud recording, face recognition and retention periods are service features rather than fixed hardware specifications and can change by region or subscription. The catalog focuses on the stable hardware characteristics supported by the listing: 3MP video, wide-angle coverage, infrared night vision and Mi Home integration.