Xiaomi Smart Door Lock 4 Pro Dual-Camera Facial Recognition Palm Vein Cat Eye Large Screen Home Smart Lock

AI 3D Facial Recognition

AI Palm Vein Recognition

AI Fingerprint Recognition

Long-term Password

Remote Unlocking via Smartphone

NFC Device Unlocking

Mechanical Emergency Key

Bluetooth Unlocking

Wireless Reverse Emergency Power Supply via Smartphone

Other supported devices including Xiaomi smartphones, watches, and more

AI 3D Face Recognition with 3D liveness detection, financial-grade security certification (BCTC, EAL4+)

AI Palm Vein Recognition for contactless, secure unlocking

AI Fingerprint Recognition optimized for elderly, children, and users with fingerprint wear or moisture

Dynamic night vision imaging system with 5 infrared fill lights

Micro-light full-color night mode and infrared black-and-white night mode

Real-time visitor monitoring and abnormal stay recording

3.97-inch high-definition indoor display screen

Supports cross-screen linkage with smartphone, TV, and other devices via Mi Home App and WeChat App

Visitor call and video intercom functionality

Self-developed next-generation noise-reducing fully automatic lock body

Quiet operation with noise reduction up to 19dB compared to first-generation models

Built-in multiple intelligent sensors for lock status monitoring (locked, unlocked, door open, door ajar, timeout)

Direct-insert C-level lock cylinder with full lock body penetration for enhanced security and anti-destruction

Lock tongue equipped with damping and noise-reducing materials

Built-in security sensors and independent security chip encryption

Virtual password input to prevent password leakage

NFC device encryption to prevent simulation and duplication

Financial-grade hardware security chip with encrypted communication and anti-attack protection

Anti-tampering and anti-theft design with mechanical and electronic safeguards

Dual-mode intelligent power supply system combining lithium battery and alkaline batteries

Automatic switch to alkaline batteries when lithium battery is depleted

Indoor and outdoor Type-C ports for flexible charging and emergency power supply

Low battery alert at ≤5% remaining power

Supports Bluetooth and Wi-Fi dual-mode connection

Remote monitoring and control via Mi Home App without need for Bluetooth Mesh gateway when using Wi-Fi

Supports device sharing and management with family members

Customizable smart scenarios and integration with Xiaomi smart home ecosystem

Supports up to 12 unlocking methods for convenience and security

AI-powered recognition suitable for all family members including elderly and children

Dynamic face recognition works in dark environments and with various facial changes

Multi-screen linkage for viewing door status on indoor screen, TV, smartphone, and other smart devices

Emergency mechanical key included

Product specifications and features are subject to change; please refer to the actual product for final details.

Performance data are based on internal laboratory tests and may vary in real-world usage.