Xiaomi has opened pre-orders for its new 2 Vein Recognition Enhanced Edition smart door lock in China. The device appeared on JD.com, and the first sales are scheduled for June 10. The price of the lock is 1,699 yuan (about $235).
Xiaomi Smart Door Lock 2 Vein Recognition Edition Features
Xiaomi equips the lock with advanced vein recognition technology that scans vein patterns on fingers using near-infrared light. This approach provides a more reliable unlocking method for users with worn-out fingerprints or skin conditions.
The system is aimed at solving common fingerprint recognition problems for elderly users and children. The AI-based algorithm continues to learn over time, improving recognition accuracy. Xiaomi claims that the system can recognize a user in less than one second, and the false recognition rate is less than 0.0001 percent.
The lock supports a total of 10 unlocking methods. These include: artificial vein recognition, artificial fingerprint recognition, permanent password, one-time password, recurring password, smartphone Bluetooth unlock, mechanical key, NFC card, and Xiaomi smart devices such as phones, smartwatches, and smart bracelets.
Xiaomi has added a smart peephole with a 2-megapixel sensor to the indoor unit. The peephole works with an AI-based human detection algorithm that records video if someone lingers at the door. The system supports infrared night vision and full-color recording in low light conditions. The device also has a built-in display that allows users to monitor their threshold in real time.
The lock has a fully automatic body from Xiaomi with noise-reducing components. The door automatically locks after closing and unlocks smoothly after successful recognition. Xiaomi uses a Class C mechanical lock cylinder that resists force entry and blocks electromagnetic interference.
The device is powered by a 5000 mAh lithium battery, which lasts approximately four months. The backup power is provided by four AA batteries, which extends the battery life for another six months. If both power sources are low, emergency charging is possible via the Type-C port.
The lock integrates with the Mi Home ecosystem via Wi-Fi. Users can remotely monitor the lock status and receive tampering notifications via the Mi Home app. The system supports multi-screen connectivity to Xiaomi TVs and smart home hubs, and works with Xiaomi’s HyperOS for personalized automation.
Xiaomi claims that the lock has passed rigorous durability tests, including 150,000 open-close cycles and temperature tests from -10°C to 55°C. The front and back panels measure 399×76 mm, and the lock itself weighs about 3.86 kg.









