Xiaomi Smart Doorbell 4 HD Dual Camera Long Battery Life Human Recognition Infrared Sensor…

This Xiaomi Smart Doorbell 4 listing describes the newer dual-camera entrance design, using a main view plus a second camera to reduce blind spots close to the door. The marketplace evidence also identifies an ultra-wide field of view around 163°, helping capture both a visitor's face and more of the area immediately around the doorway.

Human detection and infrared sensing are intended to focus notifications on meaningful activity rather than turning every change in the image into an alert. Night-vision capability keeps the doorway visible in low light, and the wireless battery design avoids the need for a permanent doorbell power circuit in locations where one is not available.

The Smart Doorbell 4 family is intended for Xiaomi Home / Mi Home control in its China-market form. The app provides visitor notifications, live video and two-way communication, while some AI and cloud-history features may depend on region or service terms. Exact battery capacity and the two cameras' individual megapixel ratings are not stated consistently enough in the supplied dossier to publish them here.

For an imported doorbell, app region is as important as physical mounting. Confirm that the device appears in the intended Xiaomi Home region before installation, and place it where the wide-angle cameras have a clear view without being blocked by a deep door frame or wall return.