The Definitive Hands-Free Unlocking Experience
Powered by Ultra-Wideband (UWB), the Smart Lock U400 unlocks as you approach with your iPhone or Apple Watch — a hands-free, privacy-preserving entry experience with no codes and no biometric checks. As an Aliro enabled lock, UWB unlocking will extend to more devices across different ecosystems.
*UWB unlock works with select iPhone and Apple Watch models and requires a Thread-enabled Apple home hub (e.g., HomePod mini or Apple TV 4K). Check full compatility ?
Hands Full
Effortlessly walk right in without setting down your belongings, as the door automatically unlocks upon your approach with authorized device.
Raining Heavily
Avoid the struggle of searching for keys or operating a touchscreen in a downpour with the UWB lock's hands-free, proximity-based unlocking.
Wearing Gloves
No longer will you need to fumble with your gloves to use keys or keypads, the U400 unlocks on approach.
Avoid the struggle of searching for keys or operating a touchscreen in a downpour with the UWB lock's hands-free, proximity-based unlocking.
Unlocks Only When it Should
Additional Unlocking Options, Choose Your Preferred Way
Tap to Unlock with Home Key in Apple Wallet
Simply add the Apple home key to your Wallet and unlock your door with your iPhone or Apple Watch—even when the devices are powered off. You can also easily share the home key with family members or provide guest codes to visitors, ensuring both security and convenience.
Fingerprint Unlocking in 0.3 Seconds
The Smart Lock U400 also features a built-in ergonomic fingerprint reader, which can securely store up to 50 fingerprints for quick touch-to-open access. The lock offers a highly accurate recognition rate of up to 98.6%.
Permanent Password
Offline Password
Scheduled Password
App Control
Voice Control
Mechanical Key
NFC Card
Automation
Matter over Thread Support
Powered by Matter over Thread, the Smart Lock U400 works by design with Apple Home, Home Assistant, Google Home, Amazon Alexa, Samsung SmartThings and other ecosystems, ensuring stable and reliable performance.
Samsung Wallet will be supported on the U400 in Q1 2026, allowing users to use a compatible Samsung device as a digital key.
Personalize Your Smart Living
Enhanced Security with Aqara Doorbell
The Smart Lock U400 integrates with the Aqara Doorbell Camera Hub G410 allowing you to see who is at the door and unlock directly from the Apple Home app.
Open the Door, Activate Your Home
You can set up 'When, if, then' rules to trigger intelligent interactions based on real-time actions, for example, set the lights to turn on automatically when the door opens.
Convenient and Sustainable Batteries
Rechargeable Battery
Our smart lock is equipped with rechargeable batteries that only requires a few hours to fully charge, and it can last up to 6 months on a single charge.
Easy Recharging
With a built-in USB-C port, you can charge your lock indoors with a power bank anytime you need. No need to remove the battery or the cover.
Low Battery Warning
When the battery level drops to 20%, you'll receive a low battery notification, giving you plenty of time to recharge before running out.
Emergency Charging
In case you forget to recharge, the U400 lock features a USB-C Emergency Charging Port, allowing you to power up with a power bank or a phone that supports USB-C to USB-C power supply.
Advanced Aqara Home App Features
Auto-Lock on Close
With a built-in gyro sensor, the lock detects when the door is closed and locks automatically, no additional contact sensor needed.
Night Latch Mode
Only the admin can unlock the door, preventing exterior keyless entry while allowing free exit from inside, perfect for a secure night's sleep.
Do Not Disturb Mode
Mute all general alerts during the set time, while still notifying for forced entry, door left ajar, or other critical events.
BHMA Certified
The U400 lock is proven to meet the industry standard for reliable residential security, ensuring durability and peace of mind.
IP65 Weatherproof (Outer Panel)
Engineered to withstand dust, splashes, and heavy rain, U400 delivers reliable performance even in demanding outdoor environments.
Rekeyable Design
This lock can be rekeyed, allowing you to change the physical key without replacing the entire lock cylinder.
Available in Three Versions
Different versions are sold through different channels. Please refer to the information provided by the channel where you made your actual purchase.
Easy Installation
Tech Specifications
| Product Model | DL-D06E, DL-D16E, DL-D06D, DL-D16D, DL-D17D, DL-D15D |
| Dimensions | Inner Panel: 7.01 × 2.99 × 1.85 in. (178 × 76 × 46.9 mm) Outer Panel: 6.58 × 2.99 × 1.01 in. (167 × 76 × 25.5 mm) |
| Operating Temperature | -18°C ~ 55°C (-0.4°F ~ 131°F) |
| Operating Humidity | 0~95% RH, no condensation |
| What's in the Box | DL-D06E & DL-D16E: Smart Lock U400 × 1, Rechargeable Li-ion Battery × 1,User Manual × 1, Installation Diagram × 1, Key × 2, Accessories Kit × 1,Bolt & Screw Kit × 1, Mounting Plate × 1 DL-D06D & DL-D16D: Smart Lock U400 × 1, Hub M100 × 1, Rechargeable Li-ion Battery × 1, User Manual × 1, Installation Diagram × 1, Key × 2, Accessories Kit × 1, Bolt & Screw Kit × 1, Mounting Plate × 1 DL-D17D&DL-D15D: Smart Lock U400 × 1, Rechargeable Li-ion Battery × 2, User Manual × 1, Installation Diagram × 1, Key × 2, Accessories Kit × 1, Bolt & Screw Kit × 1, Mounting Plate × 1 |
