12 Unlocking Methods to Choose From – Easy and Effortless Access
Say goodbye to carrying keys and meet the unlocking preferences of every family member.
AI Palm Vein Recognition
Contactless Palm Unlocking in Seconds
AI 3D Facial Recognition
Face unlock — no hands needed.
Equipped with a Smart Peephole Camera
Automatically records and captures footage of prolonged or suspicious activity outside the door.
Built-In HD Display Screen Indoors
View real-time activity outside your door for enhanced security.
Dynamic Night Vision Imaging System
Full-color visibility even in low light — see clearly at your doorstep, day or night.
Self-Developed Noise-Reduction Fully Automatic Lock Body
Quiet unlocking and locking — come home late without disturbing your family.
Direct-Insertion C-Level Lock Cylinder
Runs through the lock body to prevent tampering or forced entry.
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Product Name
Xiaomi Smart Door Lock 4 Pro
Product Model
XMZNMST01ZY
Product Dimensions
Front panel: 417.0 × 84.5 × 53.0 mm
Rear panel: 417.0 × 84.5 × 52.0 mm
Net Weight
4.7 kg
Power Supply
4 × AA alkaline batteries (1.5V each)
Lithium battery (nominal voltage: 7.4V, rated capacity: 5000mAh)
Outdoor Type-C emergency power supply (5V⎓0.5A)
Indoor Type-C lithium battery charging (5V⎓2A)
Product Security Level
Level B (GA 374-2019)
Lock Cylinder Security Level
Level C
Wireless Connectivity
Bluetooth 5.0, Wi-Fi IEEE 802.11b/g/n/ax 2.4GHz, NFC
Operating Temperature
-10°C to 55°C
Operating Humidity
0–93% RH, non-condensing