Xiaomi Smart Door Lock 4 Pro Dual Camera Edition: AI, HyperOS Security
Xiaomi Reimagines Home Security: The AI-Powered Smart Door Lock 4 Pro Dual Camera Edition Arrives with HyperOS
Imagine walking home after a long day, arms laden with grocery bags, and simply extending your palm for the door to swing open as if by magic. This isn’t a scene from a sci-fi flick; it’s the reality Xiaomi has just made possible with the launch of its Smart Door Lock 4 Pro Dual Camera Edition. Announced on October 11, 2025, in China, this device isn’t just a smart lock; it’s a high-tech guardian blending advanced biometrics, real-time surveillance, and the magic of HyperOS to transform your home into a connected, ultra-secure ecosystem. Ready to discover why this release might spell the end for traditional keys? Let’s break it down!
Xiaomi, the Chinese brand that’s brought us everything from affordable smartphones to robot vacuums, is relentless in its innovation within the smart home arena. This new model is a direct evolution of the Smart Door Lock 4 Pro, which debuted in August 2025 and already caused a stir with its palm vein recognition and sleek design. But the Dual Camera Edition ups the ante with upgraded hardware, particularly in its camera system, to offer more comprehensive surveillance. Priced at 2,899 yuan (around $407 or €380, depending on the exchange rate), it’s already available for pre-order on the Xiaomi Youpin platform. It’s not cheap, but considering what it offers, it seems like a steal compared to competitors like Yale or August, which often exceed €500 without such deep AI integration.
Your Palm is the Key: Next-Level Biometric Security
Let’s dive into what makes this lock a true “pro“: its AI-powered palm vein unlocking. Forget fingerprint scanners that struggle with dirty or wrinkled hands – this system uses near-infrared light to map the unique vein patterns in your palm, like an invisible, unrepeatable barcode. Xiaomi boasts a false rejection rate below 0.001% and an unlock time of less than a second. It even works for kids or the elderly, where traditional fingerprints might falter! And it doesn’t stop there: it integrates BCTC-certified 3D facial recognition for financial-grade security, detecting “vitality” to prevent fakes from photos or masks. In total, it supports up to 12 unlocking methods, from temporary passwords and NFC to Bluetooth with your Xiaomi phone or smartwatch, and of course, the emergency mechanical key. It’s like having a personal concierge who knows you in a dozen ways.
Eyes Everywhere: The Dual Camera Surveillance System
What truly sets this “Dual Camera” edition apart is its vigilant eye. The exterior features a 3MP main camera with a 160° ultra-wide angle, perfect for catching that elusive delivery person or spotting intruders from afar. A secondary 2MP camera covers an additional 128°, eliminating blind spots and offering a panoramic view. Both boast dynamic color night vision, thanks to 940nm infrared sensors that reach up to 10 meters without that annoying red glow. Inside the house, a 3.97-inch screen displays real-time video, like a digital peephole. And if you’re lounging on the sofa watching Netflix? Connect it to your Xiaomi TV or smart display and answer visitor calls directly from the big screen. Say goodbye to annoying interruptions!
Smarter Than Your Average Lock: AI-Powered Vigilance
Security here isn’t just visual; it’s intelligent. A 24GHz millimeter-wave radar precisely detects human movement, triggering automatic recordings if someone lingers too long. In case of a forced entry attempt, the lock emits audible alerts, sends push notifications to your Mi Home app, and records everything to the cloud. It also includes a C-level anti-pry cylinder, full door status sensors, and a silent automatic lock that won’t wake the baby. If the battery runs low, there are USB-C ports on both sides for charging with a power bank – no more getting locked out due to an oversight.
HyperOS: The Glue That Holds Your Smart Home Together
This is where HyperOS, Xiaomi’s operating system that unites all your devices like a superhero team, truly shines. This edition integrates seamlessly with HyperOS Connect, enabling futuristic automations: turn on lights when you unlock with your palm, play a welcome message (“Welcome home, family!”), or activate “away” mode that simulates occupancy with random light patterns. Imagine linking it to your robot vacuum to clean upon your arrival, or to your thermostat to adjust the temperature. It’s the glue that makes the Xiaomi ecosystem sparkle, outperforming rivals like Google Home in fluidity and customization. And with dual-band Wi-Fi 6, the connection remains stable even in large homes.
Key Features at a Glance:
- Unlocking Methods: Palm Vein Recognition, 3D Facial Recognition, Password, NFC, Bluetooth, Mechanical Key, and more (up to 12 in total).
- Camera System:
- Main Camera: 3MP, 160° Ultra-Wide Angle, Dynamic Color Night Vision (up to 10m).
- Secondary Camera: 2MP, 128° View, Eliminates Blind Spots.
- Smart Detection: 24GHz Millimeter-Wave Radar for precise human motion detection.
- Security: C-Level Anti-Pry Cylinder, Tamper Alerts, Cloud Recording, End-to-End Encryption.
- Display: 3.97-inch Indoor Screen for real-time video feed.
- Connectivity: Wi-Fi 6 Dual-Band, HyperOS Connect integration.
- Power: Emergency USB-C charging ports.
Technical Specifications Comparison
| Feature | Xiaomi Smart Door Lock 4 Pro Dual Camera Edition | Competitor A (Example) | Competitor B (Example) |
|---|---|---|---|
| Primary Unlock | Palm Vein Recognition | Fingerprint | Fingerprint |
| Secondary Unlock | 3D Facial Recognition | PIN Code | PIN Code |
| Camera Resolution | 3MP (Main) + 2MP (Secondary) | 2MP (Single) | 1MP (Single) |
| Night Vision | Dynamic Color (up to 10m) | Infrared | Infrared |
| Motion Detection | 24GHz Millimeter-Wave Radar | PIR Sensor | PIR Sensor |
| OS Integration | HyperOS Connect | Basic Smart Home | Basic Smart Home |
| Price (Approx.) | $407 (2,899 CNY) | $500+ | $450+ |
Beyond the Lock: A Glimpse into the Future of Home Access
Of course, no product is perfect. Some users in Chinese forums mention the initial price point might be a barrier for modest budgets, and the heavy reliance on the Xiaomi ecosystem could limit those using Apple or Samsung devices. While privacy is paramount (with end-to-end encryption and optional local storage), it’s always wise to stay vigilant with firmware updates for security patches. However, Xiaomi has responded swiftly to past concerns, such as an isolated incident where a similar face was mistakenly recognized – they dispatched engineers within hours.
In conclusion, the Xiaomi Smart Door Lock 4 Pro Dual Camera Edition isn’t just a lock; it’s a statement that home security can be fun, intuitive, and futuristic. If you’re in China, rush to Xiaomi Youpin before it sells out. For the rest of the world, we’ll be crossing our fingers for a global launch soon – perhaps at Mobile World Congress 2026? This device proves that Xiaomi doesn’t innovate for innovation’s sake, but to make life simpler and safer. Are you ready to say goodbye to keys? Your door will thank you.
