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Xiaomi has launched the Smart Doorbell 4 Pro Dual Camera Edition in China for 499 Yuan ($75), with an introductory price of 439 Yuan ($66). It adds a secondary downward-facing camera to monitor packages alongside the main camera.
Xiaomi Smart Doorbell 4 Pro Dual Camera Specifications
The camera array consists of a 5MP primary sensor and a 2MP secondary sensor. Both lenses offer a diagonal field of view of over 150 degrees. The primary camera faces forward to capture people at the door and the general porch area, while the secondary camera angles downward to cover the floor space.
For low-light recording, the device uses 940nm infrared LEDs. These specific infrared lights do not emit a visible red glow, which should prevent the camera from being a nuisance to neighbors and common apartment dwellers.
The doorbell operates on a 9,800mAh battery. According to the Xiaomi laboratory, this capacity offers about 172 days of use per charge, assuming that the device records 20 ten-second, motion-triggered clips every day.
Motion detection is based on dual passive infrared (PIR) sensors that cover a 180-degree horizontal area and detect movement up to five meters away. You can adjust the detection sensitivity and recording intervals within the Mi Home app.
On the software side, the doorbell has AI recognition for people, packages and pets, as well as free cloud-based facial recognition. It also supports voice-changing calls, personalized voice responses, and an automatic ambient light that turns on when someone comes in at night.
For video storage, the device accepts microSD cards up to 256GB and includes 72 hours of free rolling cloud storage. Data transmission is secured with AES-128 encryption and a special Mi Home security chip.
The doorbell integrates strongly into Xiaomi’s ecosystem. It supports Xiaomi HyperConnect to view live feeds on compatible Xiaomi TVs and smart displays, in addition to XiaoAI voice commands to check battery levels or pull up the camera feed. The hardware mounts via a 3M adhesive pad or screws and includes a tamper alarm that sounds a siren, records video and sends a phone alert if someone tries to tear it off the wall.
In related news, Xiaomi recently launched the Smart 4G Camera 3 with 3K recording and 360-degree rotation, in addition to a new portable hair dryer with a 110,000 RPM motor and 10 drying modes.
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(JD)