Xiaomi Smart Lock M40: High-End Security on a Budget
Xiaomi Smart Lock M40: High-End Security at a Mid-Range Price!
Xiaomi continues to impress, this time with the launch of the Xiaomi Smart Lock M40 in China. Released on December 1st, 2025, this smart lock is bringing high-end security features to a much more accessible price point. Thanks to a strategic trimming of one premium feature and a helpful government subsidy, you can snag this feature-packed lock for around $380 USD. That’s a steal considering what it offers! Let’s dive into what makes this smart home gadget a game-changer.
The Xiaomi Smart Lock M40: Pro Features, Budget-Friendly Price
Xiaomi has pulled off some magic to deliver premium features without the premium price tag. The official price is 3299 yuan, but with the 15% government subsidy (capped at 500 yuan), the price drops to a very tempting 2804 yuan. Converting to around $380 USD or €365, it’s an absolute bargain! According to this report, the lock is already selling out fast in China!
What’s the Difference from the Pro Model?
Essentially, Xiaomi strategically removed the least used and most expensive feature: palm vein recognition. They also slightly reduced the screen size from 5.0″ to 4.94″ – a difference you’d hardly notice. This small compromise unlocks significant savings for consumers. Everything else that made the Pro version awesome? It’s all still there!
Key Features You’ll Love
The Xiaomi Smart Lock M40 isn’t just about a lower price; it’s packed with features that make your home safer and smarter.
Smart Lock
Big, Beautiful Display & Smart Home Hub
- Large 4.94″ HD Inner Screen (720×720): No more squinting to see who’s at the door!
- Control Center Functionality: View visitors without bending down, receive package notifications, and even see messages from the Mi Home app.
Advanced Security & AI-Powered Detection
- Panoramic Fisheye Lens with Dual AI Cameras:
- 3MP Main Camera: 175° Ultra-Wide Angle
- 2MP Secondary Camera: 128°, focused at 0-30cm (prevents lens blocking)
- 6 x 940nm Infrared LEDs: Night vision without visible red light
- AI Detection: Identifies people, delivery personnel, pets, and suspicious behavior (loitering, face-peeking, etc.)
- 12 Unlocking Methods: Flexibility for everyone in the family!
Multiple Ways to Unlock
The Xiaomi Smart Lock M40 provides various methods to unlock your door:
- 3D Structured Light Facial Recognition (anti-spoofing)
- Semiconductor Fingerprint Sensor
- 7 Password Types (permanent, periodic, one-time, duress, etc.)
- NFC (Xiaomi phones, bands, etc.)
- Apple HomeKey (iPhone and Apple Watch)
- Emergency Mechanical Key
Peace of Mind Power
- Dual Power System:
- Main Lithium Battery: Up to 4.5 months
- 4 x AA Backup Batteries: Up to 6 additional months
- Emergency USB-C Port: Supports PD fast charging and reverse wireless charging from your phone.
A deep dive into Xiaomi Smart Lock M40
Seamless Integration with the Xiaomi Ecosystem
The Smart Lock M40 fully integrates with Xiaomi’s HyperConnect ecosystem, making it a true smart home centerpiece.
- Timbre Integration: Real-time video on your phone, TV, XiaoAI speakers, and even your Xiaomi SU7 car!
- Direct WeChat Video Calls: Answer the door from anywhere!
- Remote Control & Logs: Manage your lock and see detailed access history via the Mi Home app.
- Smart Automations: Unlock the door to trigger lights, open curtains, and turn on the AC. You can do so much with HyperOS.
Innovation
Top-Tier Security Features
The M40 uses the 2nd generation fully automatic and silent lock body, combined with a C-level cylinder (the highest security rating in China) offering excellent security against physical intrusion.
The Best Value Smart Lock of 2025?
For $380 USD (with the Chinese subsidy), the Xiaomi Smart Lock M40 delivers a combination of features that are simply unmatched. You get a large interior screen, dual AI cameras, 3D facial recognition, a silent full-automatic lock body, a C-level cylinder, and full smart home integration. Comparable products from Aqara, Nuki, and Lockly easily cost €650-€950 in Europe and the US. While it might cost around €650-€700 if it arrives officially in the West, importing from China (or waiting for international sellers in 2026) makes the M40 an unbeatable high-end option at a mid-range price. It’s already selling out fast on Xiaomi Youpin, JD.com, and Tmall, so if you want one, act fast! Don’t miss out on this tech news opportunity!
