Xiaomi has officially launched the Smart Door Lock M40 and opened pre-orders in China. The device is priced at 3299 yuan ($464) for its first sale.

The company also introduced the higher-end M40 Pro model last month. The M40 retains most of the features found on the Pro version, with minor differences such as the removal of palm-vein recognition and a slightly smaller 4.94-inch touchscreen.

Xiaomi Smart Door Lock M40 Specifications

The Smart Door Lock M40 includes an AI dual-camera peephole system with a 175-degree 3MP wide-angle camera and a 128-degree 2MP secondary camera. The system supports panoramic viewing, video calling, and real-time notifications. Xiaomi has equipped the lock with six infrared night vision lights and added multiple night modes for better visibility in low-light conditions.

The M40 features a full-body automatic lock mechanism and uses a straight-insert C-grade mechanical cylinder. This cylinder remains operable even when the external panel is damaged. The lock also includes a safety chipset, encrypted communication protocols, and structural reinforcements to protect against physical tampering and hacking attempts.

The front panel measures 431 x 98 x 46 mm, and the rear panel is slightly shorter at 421 mm in height. The device weighs 5.18 kilograms. Xiaomi uses a combination of metal and internal sensors to improve durability and stability across different environments.

The power system includes an 8000mAh rechargeable lithium battery and a set of four AA alkaline batteries for backup. Both inner and outer panels support Type-C ports for emergency power input.

The system also allows reverse wireless charging from supported smartphones. The lithium battery supports up to 4.5 months of use, while the AA batteries can extend usage up to six months.

For connectivity, it features Bluetooth 5.3, NFC, and Wi-Fi 6 on the 2.4GHz band. The lock works with Xiaomi HyperOS and supports remote access, instant alerts, and intercom functions through the Mi Home app.

Control extends across smartphones, tablets, TVs, and the Xiaomi SU7 car system. It also supports voice and video interactions through WeChat.

Xiaomi claims the M40 can operate in temperatures ranging from -10°C to 55°C. The lock supports 12 unlocking methods, including AI 3D facial recognition, AI fingerprint recognition, NFC cards, numeric passwords, and app-based control.

In related news, Xiaomi recently launched a smart car humidifier with HyperOS, USB-C connectivity, and support for the SU7 and YU7 models. The company also introduced a new 12kg front-load washing machine with HyperOS integration and 25 smart wash modes.

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(Source)