Aqara / Deadbolts

Aqara UWB Smart Lock U400 Matter Over Thread Apple Home Key Fingerprint Keyless Entry Deadbolt Touchscreen Keypad Rechargeable

Name: Aqara UWB Smart Lock U400 Matter Over Thread Apple Home Key Fingerprint Keyless Entry Deadbolt Touchscreen Keypad Rechargeable
Brand: Aqara
SKU: JC25625
Price: 367.18 USD
Rating: 4.1 (150 reviews)

★ 4.1 · 150 ratings

1 / 8

$367.18

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Selected option: Aqara UWB Smart Lock U400 Matter Over Thread Apple Home Key Fingerprint Keyless Entry Deadbolt Touchscreen Keypad Rechargeable
SKU: JC25625

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Source specifications

Brand: Aqara
Special Feature: UWB True Hands-Free Unlock
Lock Type: Deadbolt
Item dimensions L x W x H: 3 x 4.2 x 7 inches
Material: Aluminum

The details

About this item

Product description UWB Hands-Free Unlocking for iPhone Users The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 1 1 Merchant Video 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 with no codes and no biometric checks. Note: UWB requires a Thread-enabled Apple Home hub(HomePod 2, HomePod mini, Apple TV 4K 2021/2022) and is supported on Apple Watch Series 6+ (excl. SE) running watchOS 11.5+ and iPhone 11+ (excl. iPhone SE & 16e) running iOS 18.5+. For the smoothest UWB experience, iOS 26.2 or later is recommended. The video showcases the product in use. The video guides you through product setup. The video True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect whe

True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect when your hands are full, you're wearing gloves, or arriving in the rain. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.)
All-in-One Unlocking Options: Enjoy Apple home key tap-to-unlock (requires an Apple Thread-enabled Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022), plus fingerprint, touchscreen passcode, voice assistant control, app remote access, NFC card support (card sold separately), and a physical key, giving you flexible, reliable ways to enter your home in any situation.
Matter Over Thread for Multi-Ecosystem Compatibility: Built with Matter over Thread, the U400 can connect to multiple smart home platforms simultaneously, allowing you to enjoy the unique features of each ecosystem. Thread offers faster response, more stable connectivity, lower power consumption, and secure data transmission. Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform.
Convenient Rechargeable Power System: Powered by a rechargeable and removable lithium battery that lasts up to 6 months per charge. Use the lock's USB-C port to recharge without taking the lock offline, or remove the battery and charge it separately. A low-battery voice alert will notify you when the battery drops below 20%, ensuring you never get caught off guard.
Certified Security & Outdoor Durability: BHMA-certified for proven protection, mechanical strength, and long-term reliability. The IP65-rated exterior guards against dust and water for dependable outdoor performance. Plus, the rekeyable design allows you to change the physical key without replacing the entire lock cylinder.
Unlock More Features with the Aqara App: Customize your security with Auto Lock, Night Latch Mode (only admins and physical keys can unlock at night), and Do Not Disturb Mode. Integrates seamlessly with Aqara cameras like the G5 Pro and G410 doorbell, allowing you to view visitors and unlock directly via live video interaction.

Product information

Materials and care

Material: Aluminum

From the manufacturer

Product details and media

Product description UWB Hands-Free Unlocking for iPhone Users The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 1 1 Merchant Video 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 with no codes and no biometric checks. Note: UWB requires a Thread-enabled Apple Home hub(HomePod 2, HomePod mini, Apple TV 4K 2021/2022) and is supported on Apple Watch Series 6+ (excl. SE) running watchOS 11.5+ and iPhone 11+ (excl. iPhone SE & 16e) running iOS 18.5+. For the smoothest UWB experience, iOS 26.2 or later is recommended. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 2 2 Merchant Video Unlocks Only When It Should Based on range and angle measurements, UWB detects your exact position to determine your unlock intention. It unlocks precisely when you're ready to enter and avoids any accidental or delayed openings. Even if you walk by or stand near the entrance, it stays locked until you approach head-on with the intention to enter, preventing accidental unlocks and delivering a truly

Highlights: True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect when your hands are full, you're wearing gloves, or arriving in the rain. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.) All-in-One Unlocking Options: Enjoy Apple home key tap-to-unlock (requires an Apple Thread-enabled Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022), plus fingerprint, touchscreen passcode, voice assistant control, app remote access, NFC card support (card sold separately), and a physical key, giving you flexible, reliable ways to enter your home in any situation. Matter Over Thread for Multi-Ecosystem Compatibility: Built with Matter over Thread, the U400 can connect to multiple smart home platforms simultaneously, allowing you to enjoy the unique features of each ecosystem. Thread offers faster response, more stable connectivity, lower power consumption, and secure data transmission. Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform. Convenient Rechargeable Power System: Powered by

What you can expect: True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect when your hands are full, you're wearing gloves, or arriving in the rain. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.) All-in-One Unlocking Options: Enjoy Apple home key tap-to-unlock (requires an Apple Thread-enabled Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022), plus fingerprint, touchscreen passcode, voice assistant control, app remote access, NFC card support (card sold separately), and a physical key, giving you flexible, reliable ways to enter your home in any situation. Matter Over Thread for Multi-Ecosystem Compatibility: Built with Matter over Thread, the U400 can connect to multiple smart home platforms simultaneously, allowing you to enjoy the unique features of each ecosystem. Thread offers faster response, more stable connectivity, lower power consumption, and secure data transmission. Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform. Convenient Rechargeable Power System: Powered by a rechargeable and removable lithium battery that lasts up to 6 months per charge. Use the lock's USB-C port to

Customer feedback: 4.1/5 average rating.

Customers say: Customers find the smart lock works like magic, with incredibly fast locking and unlocking, good fingerprint recognition, and easy installation with Apple Home integration.

Review snippets: The Aqara U400 really changes the game when it comes to modern smart locks, especially with its ultra-wideband unlocking. It’s insanely fast, super smooth, and just works every time. I haven’t had a single issue since using it. It’s also / Installation was easy, and unit works great. UWB unlocking is fantastic. Setting everything up was a little unintuitive from a software standpoint, but once figured out everything’s been straightforward and reliable. I love the design. The UWB auto-unlock and instant

From the brand Previous page Empowering Your Smart Home Matter is the universal language of the smart home, developed to help devices from different brands work together. Aqara is an active supporter of Matter. As Matter is still evolving, your experience may vary depending on the platform. If you encounter any issues, Aqara is committed to addressing issues through continuous firmware updates and responsive support. Thank you for your understanding as we build a more connected smart home together. UWB Smart Lock U400 Visit the Store Aqara Smart Lock Visit the Store Aqara Cameras & Hubs Visit the Store Aqara Sensors Visit the Store Next page

Aqara UWB Smart Lock U400 Matter Over Thread Apple Home Key Fingerprint Keyless Entry Deadbolt Touchscreen Keypad Rechargeable — product detail 1

Customer feedback

Customer ratings

4.1 out of 5

150 ratings

Customers find the smart lock works like magic, with incredibly fast locking and unlocking, good fingerprint recognition, and easy installation with Apple Home integration.

Air

5.0 out of 5 stars Most impressive lock I’ve come across.

Rating: 5

January 20, 2026

Verified purchase

The Aqara U400 really changes the game when it comes to modern smart locks, especially with its ultra-wideband unlocking. It’s insanely fast, super smooth, and just works every time. I haven’t had a single issue since using it. It’s also a bit of a party trick—guests are always impressed when they see it unlock automatically, just like with the other smart features built into the lock. The locking and unlocking is noticeably quicker thanks to the updated motor. Even compared to the U100—which was already fast—this feels snappier and more precise. Everything about it feels solid and intentional. I’m also a big fan of the refreshed design. The U100 already looked modern, but the rounded edges on the U400 and the new anti-peep keypad (where the numbers stay hidden until you activate it) really give it a premium vibe. Another big win is the rechargeable battery. It’s just as reliable as the disposable batteries from the U100, but way more convenient. You can even hot-charge it, meaning you can plug it in and keep using it at the same time—huge plus. Feature-wise, it checks every box: facial recognition, fingerprint scanning, passcodes, NFC cards, automations, USB access, remote control, and even a physical key if you want it. Managing access is easy too, whether you’re setting up permanent users or temporary access for guests. Honestly, there’s not much to complain about. If I really had to nitpick, the lock is on the larger side—but that’s minor. If you’re shopping for a smart lock, this one pretty much ends the search. It does everything you’d want and then some. Another solid win from Aqara, and easily one of the best products in their catalog. Read more

Evan

5.0 out of 5 stars Best smart lock I’ve ever used

Rating: 5

January 11, 2026

Verified purchase

Installation was easy, and unit works great. UWB unlocking is fantastic. Setting everything up was a little unintuitive from a software standpoint, but once figured out everything’s been straightforward and reliable. I love the design. The UWB auto-unlock and instant auto-relocking functions work fantastic. The motor is adequately strong for our needs. I really appreciate the rechargeable battery pack, which I’ve never seen in a smart deadbolt before. Fingerprint registering was a little finicky and troublesome but has worked great once setup. I’ve used closed to a dozen smart deadbolt locks over the past ten years and this is the first I’ve found that I think I’m completely satisfied with. Read more

Phil

4.0 out of 5 stars Troublesome binding to hubs

Rating: 4

January 8, 2026

Verified purchase

Going to try again tomorrow but right now, it’s pretty useless. Initial setup seemed promising and it updated firmware after the battery charged a bit (it arrived below 20%) but then immediately lost binding with the Aqara hub and went no response in HomeKit. I reset all the Matter stuff and can’t seem to do anything with it. Bluetooth only stays connected for a few seconds before disconnecting, too. I don’t think the initial calibration worked properly either because the knob sits at about 45 degrees when it’s fully locked and the door open/close indicator is incorrect more often than not. The battery % and charging status wasn’t synchronized between Aqara app and Apple Home. No idea if UWB works because I couldn’t get to those settings before everything went wonky. I am going to reset the lock and try adding directly to Apple Home first and see if that works any better and will update my review based on those results. Aqara really needs to fix their sub-par Matter controllers. UPDATE: Added a star back because I was finally able to get it bound to Apple Home (after about 10 resets and pairing attempts) and connectivity has been solid for a couple days. UWB unlock on approach operates as expected. Calibration is still wonky where the motor doesn't extend the deadbolt as far as it can go, leaving the toggle switch just shy of horizontal. Manually turning the lock allows me to close it all the way. This is making me hesitant to put this thing on my main door. I've also noticed that my phone maintains a persistent bluetooth connection with the lock when I'm in the house. My understanding is this connection is a requirement for the UWB features, but I'm wondering if this will cause excessive battery drain over time. Battery percentage and active charging status does not update on the Apple Home accessory page with any amount of reliability so any notifications about low battery will likely arrive when its far too late. Getting really tired of this new technology cycle of feeling like a beta tester for products that I've paid full price for. Read more

Fritz Grobe

5.0 out of 5 stars Walk up to the door and it unlocks!

Rating: 5

March 10, 2026

Verified purchase

My basic key pad lock gave up the ghost after many years of noble service, so I went for the upgrade with the Aqara U400. I'm so happy I did -- it is superb! Installation and set up was a breeze. I already have an Apple TV as my smart home hub, so all I had to do was point my iPhone camera at the QR code on the lock and click through the set up process in the Home app. Easy and quick. My favorite feature is the UWB that unlocks as I walk up to the door outside with my iPhone. It's crazy how nice and helpful this is. It's been fast and reliable, unlocking right before I reach for the door handle -- and it only unlocks from the outside. I thought I would like this feature, and it turns out I love it! Just don't forget: you also need a hub for this feature to work. I appreciate that it has a fingerprint reader if you want and physical keys just in case, but really, all I'm using is the UWB for myself and the key pad for guests. Build quality is excellent and connectivity has been great. The rechargeable battery is also great. And last but not least, locking and unlocking is super fast! All a big step up from my previous smart lock. This one has been a home run! Read more

Complete product information

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  "bullets": [
    "True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect when your hands are full, you're wearing gloves, or arriving in the rain. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.)",
    "All-in-One Unlocking Options: Enjoy Apple home key tap-to-unlock (requires an Apple Thread-enabled Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022), plus fingerprint, touchscreen passcode, voice assistant control, app remote access, NFC card support (card sold separately), and a physical key, giving you flexible, reliable ways to enter your home in any situation.",
    "Matter Over Thread for Multi-Ecosystem Compatibility: Built with Matter over Thread, the U400 can connect to multiple smart home platforms simultaneously, allowing you to enjoy the unique features of each ecosystem. Thread offers faster response, more stable connectivity, lower power consumption, and secure data transmission. Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform.",
    "Convenient Rechargeable Power System: Powered by a rechargeable and removable lithium battery that lasts up to 6 months per charge. Use the lock's USB-C port to recharge without taking the lock offline, or remove the battery and charge it separately. A low-battery voice alert will notify you when the battery drops below 20%, ensuring you never get caught off guard.",
    "Certified Security & Outdoor Durability: BHMA-certified for proven protection, mechanical strength, and long-term reliability. The IP65-rated exterior guards against dust and water for dependable outdoor performance. Plus, the rekeyable design allows you to change the physical key without replacing the entire lock cylinder.",
    "Unlock More Features with the Aqara App: Customize your security with Auto Lock, Night Latch Mode (only admins and physical keys can unlock at night), and Do Not Disturb Mode. Integrates seamlessly with Aqara cameras like the G5 Pro and G410 doorbell, allowing you to view visitors and unlock directly via live video interaction."
  ],
  "specs": {},
  "category": "Tools & Home Improvement > Hardware > Door Hardware & Locks > Deadbolts",
  "category_path": [
    "Tools & Home Improvement",
    "Hardware",
    "Door Hardware & Locks",
    "Deadbolts"
  ],
  "category_slug": "tools-home-improvement/hardware/door-hardware-locks/deadbolts",
  "category_leaf": "Deadbolts",
  "variations": {
    "sizes": [],
    "colors": [],
    "size_chart": null
  },
  "reviews": {
    "average_rating": 4.1,
    "customers_say": "Customers find the smart lock works like magic, with incredibly fast locking and unlocking, good fingerprint recognition, and easy installation with Apple Home integration.",
    "items": [
      {
        "title": "5.0 out of 5 stars Most impressive lock I’ve come across.",
        "body": "The Aqara U400 really changes the game when it comes to modern smart locks, especially with its ultra-wideband unlocking. It’s insanely fast, super smooth, and just works every time. I haven’t had a single issue since using it. It’s also a bit of a party trick—guests are always impressed when they see it unlock automatically, just like with the other smart features built into the lock. The locking and unlocking is noticeably quicker thanks to the updated motor. Even compared to the U100—which was already fast—this feels snappier and more precise. Everything about it feels solid and intentional. I’m also a big fan of the refreshed design. The U100 already looked modern, but the rounded edges on the U400 and the new anti-peep keypad (where the numbers stay hidden until you activate it) really give it a premium vibe. Another big win is the rechargeable battery. It’s just as reliable as the disposable batteries from the U100, but way more convenient. You can even hot-charge it, meaning you can plug it in and keep using it at the same time—huge plus. Feature-wise, it checks every box: facial recognition, fingerprint scanning, passcodes, NFC cards, automations, USB access, remote control, and even a physical key if you want it. Managing access is easy too, whether you’re setting up permanent users or temporary access for guests. Honestly, there’s not much to complain about. If I really had to nitpick, the lock is on the larger side—but that’s minor. If you’re shopping for a smart lock, this one pretty much ends the search. It does everything you’d want and then some. Another solid win from Aqara, and easily one of the best products in their catalog. Read more",
        "author": "Air",
        "rating": 5,
        "date": "January 20, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Best smart lock I’ve ever used",
        "body": "Installation was easy, and unit works great. UWB unlocking is fantastic. Setting everything up was a little unintuitive from a software standpoint, but once figured out everything’s been straightforward and reliable. I love the design. The UWB auto-unlock and instant auto-relocking functions work fantastic. The motor is adequately strong for our needs. I really appreciate the rechargeable battery pack, which I’ve never seen in a smart deadbolt before. Fingerprint registering was a little finicky and troublesome but has worked great once setup. I’ve used closed to a dozen smart deadbolt locks over the past ten years and this is the first I’ve found that I think I’m completely satisfied with. Read more",
        "author": "Evan",
        "rating": 5,
        "date": "January 11, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "4.0 out of 5 stars Troublesome binding to hubs",
        "body": "Going to try again tomorrow but right now, it’s pretty useless. Initial setup seemed promising and it updated firmware after the battery charged a bit (it arrived below 20%) but then immediately lost binding with the Aqara hub and went no response in HomeKit. I reset all the Matter stuff and can’t seem to do anything with it. Bluetooth only stays connected for a few seconds before disconnecting, too. I don’t think the initial calibration worked properly either because the knob sits at about 45 degrees when it’s fully locked and the door open/close indicator is incorrect more often than not. The battery % and charging status wasn’t synchronized between Aqara app and Apple Home. No idea if UWB works because I couldn’t get to those settings before everything went wonky. I am going to reset the lock and try adding directly to Apple Home first and see if that works any better and will update my review based on those results. Aqara really needs to fix their sub-par Matter controllers. UPDATE: Added a star back because I was finally able to get it bound to Apple Home (after about 10 resets and pairing attempts) and connectivity has been solid for a couple days. UWB unlock on approach operates as expected. Calibration is still wonky where the motor doesn't extend the deadbolt as far as it can go, leaving the toggle switch just shy of horizontal. Manually turning the lock allows me to close it all the way. This is making me hesitant to put this thing on my main door. I've also noticed that my phone maintains a persistent bluetooth connection with the lock when I'm in the house. My understanding is this connection is a requirement for the UWB features, but I'm wondering if this will cause excessive battery drain over time. Battery percentage and active charging status does not update on the Apple Home accessory page with any amount of reliability so any notifications about low battery will likely arrive when its far too late. Getting really tired of this new technology cycle of feeling like a beta tester for products that I've paid full price for. Read more",
        "author": "Phil",
        "rating": 4,
        "date": "January 8, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Walk up to the door and it unlocks!",
        "body": "My basic key pad lock gave up the ghost after many years of noble service, so I went for the upgrade with the Aqara U400. I'm so happy I did -- it is superb! Installation and set up was a breeze. I already have an Apple TV as my smart home hub, so all I had to do was point my iPhone camera at the QR code on the lock and click through the set up process in the Home app. Easy and quick. My favorite feature is the UWB that unlocks as I walk up to the door outside with my iPhone. It's crazy how nice and helpful this is. It's been fast and reliable, unlocking right before I reach for the door handle -- and it only unlocks from the outside. I thought I would like this feature, and it turns out I love it! Just don't forget: you also need a hub for this feature to work. I appreciate that it has a fingerprint reader if you want and physical keys just in case, but really, all I'm using is the UWB for myself and the key pad for guests. Build quality is excellent and connectivity has been great. The rechargeable battery is also great. And last but not least, locking and unlocking is super fast! All a big step up from my previous smart lock. This one has been a home run! Read more",
        "author": "Fritz Grobe",
        "rating": 5,
        "date": "March 10, 2026",
        "verified": true,
        "images": []
      }
    ]
  },
  "short_description": "Product description UWB Hands-Free Unlocking for iPhone Users The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 1 1 Merchant Video 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 with no codes and no biometric checks. Note: UWB requires a Thread-enabled Apple Home hub(HomePod 2, HomePod mini, Apple TV 4K 2021/2022) and is supported on Apple Watch Series 6+ (excl. SE) running watchOS 11.5+ and iPhone 11+ (excl. iPhone SE & 16e).",
  "about_this_item": "Product description UWB Hands-Free Unlocking for iPhone Users The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 1 1 Merchant Video 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 with no codes and no biometric checks. Note: UWB requires a Thread-enabled Apple Home hub(HomePod 2, HomePod mini, Apple TV 4K 2021/2022) and is supported on Apple Watch Series 6+ (excl. SE) running watchOS 11.5+ and iPhone 11+ (excl. iPhone SE & 16e) running iOS 18.5+. For the smoothest UWB experience, iOS 26.2 or later is recommended. The video showcases the product in use. The video guides you through product setup. The video True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect whe",
  "long_description": "Product description UWB Hands-Free Unlocking for iPhone Users The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 1 1 Merchant Video 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 with no codes and no biometric checks. Note: UWB requires a Thread-enabled Apple Home hub(HomePod 2, HomePod mini, Apple TV 4K 2021/2022) and is supported on Apple Watch Series 6+ (excl. SE) running watchOS 11.5+ and iPhone 11+ (excl. iPhone SE & 16e) running iOS 18.5+. For the smoothest UWB experience, iOS 26.2 or later is recommended. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 2 2 Merchant Video Unlocks Only When It Should Based on range and angle measurements, UWB detects your exact position to determine your unlock intention. It unlocks precisely when you're ready to enter and avoids any accidental or delayed openings. Even if you walk by or stand near the entrance, it stays locked until you approach head-on with the intention to enter, preventing accidental unlocks and delivering a truly\n\nHighlights: True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect when your hands are full, you're wearing gloves, or arriving in the rain. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.) All-in-One Unlocking Options: Enjoy Apple home key tap-to-unlock (requires an Apple Thread-enabled Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022), plus fingerprint, touchscreen passcode, voice assistant control, app remote access, NFC card support (card sold separately), and a physical key, giving you flexible, reliable ways to enter your home in any situation. Matter Over Thread for Multi-Ecosystem Compatibility: Built with Matter over Thread, the U400 can connect to multiple smart home platforms simultaneously, allowing you to enjoy the unique features of each ecosystem. Thread offers faster response, more stable connectivity, lower power consumption, and secure data transmission. Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform. Convenient Rechargeable Power System: Powered by\n\nWhat you can expect: True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect when your hands are full, you're wearing gloves, or arriving in the rain. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.) All-in-One Unlocking Options: Enjoy Apple home key tap-to-unlock (requires an Apple Thread-enabled Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022), plus fingerprint, touchscreen passcode, voice assistant control, app remote access, NFC card support (card sold separately), and a physical key, giving you flexible, reliable ways to enter your home in any situation. Matter Over Thread for Multi-Ecosystem Compatibility: Built with Matter over Thread, the U400 can connect to multiple smart home platforms simultaneously, allowing you to enjoy the unique features of each ecosystem. Thread offers faster response, more stable connectivity, lower power consumption, and secure data transmission. Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform. Convenient Rechargeable Power System: Powered by a rechargeable and removable lithium battery that lasts up to 6 months per charge. Use the lock's USB-C port to\n\nCustomer feedback: 4.1/5 average rating.\n\nCustomers say: Customers find the smart lock works like magic, with incredibly fast locking and unlocking, good fingerprint recognition, and easy installation with Apple Home integration.\n\nReview snippets: The Aqara U400 really changes the game when it comes to modern smart locks, especially with its ultra-wideband unlocking. It’s insanely fast, super smooth, and just works every time. I haven’t had a single issue since using it. It’s also / Installation was easy, and unit works great. UWB unlocking is fantastic. Setting everything up was a little unintuitive from a software standpoint, but once figured out everything’s been straightforward and reliable. I love the design. The UWB auto-unlock and instant\n\nFrom the brand Previous page Empowering Your Smart Home Matter is the universal language of the smart home, developed to help devices from different brands work together. Aqara is an active supporter of Matter. As Matter is still evolving, your experience may vary depending on the platform. If you encounter any issues, Aqara is committed to addressing issues through continuous firmware updates and responsive support. Thank you for your understanding as we build a more connected smart home together. UWB Smart Lock U400 Visit the Store Aqara Smart Lock Visit the Store Aqara Cameras & Hubs Visit the Store Aqara Sensors Visit the Store Next page",
  "long_description_blocks": [
    {
      "type": "p",
      "text": "Product description UWB Hands-Free Unlocking for iPhone Users The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 1 1 Merchant Video 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 with no codes and no biometric checks. Note: UWB requires a Thread-enabled Apple Home hub(HomePod 2, HomePod mini, Apple TV 4K 2021/2022) and is supported on Apple Watch Series 6+ (excl. SE) running watchOS 11.5+ and iPhone 11+ (excl. iPhone SE & 16e) running iOS 18.5+. For the smoothest UWB experience, iOS 26.2 or later is recommended. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 2 2 Merchant Video Unlocks Only When It Should Based on range and angle measurements, UWB detects your exact position to determine your unlock intention. It unlocks precisely when you're ready to enter and avoids any accidental or delayed openings. Even if you walk by or stand near the entrance, it stays locked until you approach head-on with the intention to enter, preventing accidental unlocks and delivering a truly"
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      "text": "Highlights: True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect when your hands are full, you're wearing gloves, or arriving in the rain. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.) All-in-One Unlocking Options: Enjoy Apple home key tap-to-unlock (requires an Apple Thread-enabled Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022), plus fingerprint, touchscreen passcode, voice assistant control, app remote access, NFC card support (card sold separately), and a physical key, giving you flexible, reliable ways to enter your home in any situation. Matter Over Thread for Multi-Ecosystem Compatibility: Built with Matter over Thread, the U400 can connect to multiple smart home platforms simultaneously, allowing you to enjoy the unique features of each ecosystem. Thread offers faster response, more stable connectivity, lower power consumption, and secure data transmission. Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform. Convenient Rechargeable Power System: Powered by"
    },
    {
      "type": "p",
      "text": "What you can expect: True Hands-Free Unlocking with UWB Technology: Experience a new era of smart access — UWB (Ultra-Wideband) detects your incoming presence, direction, and intent to unlock automatically as you approach. It provides a faster, more convenient, and highly secure way to enter your home without touching the lock. Perfect when your hands are full, you're wearing gloves, or arriving in the rain. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.) All-in-One Unlocking Options: Enjoy Apple home key tap-to-unlock (requires an Apple Thread-enabled Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022), plus fingerprint, touchscreen passcode, voice assistant control, app remote access, NFC card support (card sold separately), and a physical key, giving you flexible, reliable ways to enter your home in any situation. Matter Over Thread for Multi-Ecosystem Compatibility: Built with Matter over Thread, the U400 can connect to multiple smart home platforms simultaneously, allowing you to enjoy the unique features of each ecosystem. Thread offers faster response, more stable connectivity, lower power consumption, and secure data transmission. Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform. Convenient Rechargeable Power System: Powered by a rechargeable and removable lithium battery that lasts up to 6 months per charge. Use the lock's USB-C port to"
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      "text": "Customer feedback: 4.1/5 average rating."
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      "text": "Customers say: Customers find the smart lock works like magic, with incredibly fast locking and unlocking, good fingerprint recognition, and easy installation with Apple Home integration."
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      "text": "Review snippets: The Aqara U400 really changes the game when it comes to modern smart locks, especially with its ultra-wideband unlocking. It’s insanely fast, super smooth, and just works every time. I haven’t had a single issue since using it. It’s also / Installation was easy, and unit works great. UWB unlocking is fantastic. Setting everything up was a little unintuitive from a software standpoint, but once figured out everything’s been straightforward and reliable. I love the design. The UWB auto-unlock and instant"
    },
    {
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      "text": "From the brand Previous page Empowering Your Smart Home Matter is the universal language of the smart home, developed to help devices from different brands work together. Aqara is an active supporter of Matter. As Matter is still evolving, your experience may vary depending on the platform. If you encounter any issues, Aqara is committed to addressing issues through continuous firmware updates and responsive support. Thank you for your understanding as we build a more connected smart home together. UWB Smart Lock U400 Visit the Store Aqara Smart Lock Visit the Store Aqara Cameras & Hubs Visit the Store Aqara Sensors Visit the Store Next page"
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    "product": "Product description UWB Hands-Free Unlocking for iPhone Users The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 1 1 Merchant Video 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 with no codes and no biometric checks. Note: UWB requires a Thread-enabled Apple Home hub(HomePod 2, HomePod mini, Apple TV 4K 2021/2022) and is supported on Apple Watch Series 6+ (excl. SE) running watchOS 11.5+ and iPhone 11+ (excl. iPhone SE & 16e) running iOS 18.5+. For the smoothest UWB experience, iOS 26.2 or later is recommended. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 2 2 Merchant Video Unlocks Only When It Should Based on range and angle measurements, UWB detects your exact position to determine your unlock intention. It unlocks precisely when you're ready to enter and avoids any accidental or delayed openings. Even if you walk by or stand near the entrance, it stays locked until you approach head-on with the intention to enter, preventing accidental unlocks and delivering a truly secure, hands-free experience. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 3 3 Merchant Video Why choose UWB? No fingerprints, no face scans, no delays — just walk in. Unlike fingerprint or facial recognition, UWB unlocking doesn’t require collecting or storing your biometric data. There’s no scanning, no waiting, and nothing to fail when conditions aren’t perfect. Rain-soaked hands, gloves on, or a hat, mask, and scarf covering your face — UWB still works smoothly. As you approach, the door unlocks instantly and securely, letting you walk in without pausing or adjusting how you arrive home. Just a seamless, private, and reliable way to enter — every time. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 4 4 Merchant Video Unlock Without Lifting a Finger Whether your hands are full of groceries, you're carrying your child, or returning home with packages after a long day, UWB senses your approach and unlocks automatically. No need to take out your phone. No need to tap a fingerprint. Even with gloves on, wet hands in the rain, or when you simply want a smoother arrival, you can enter effortlessly and securely. Just walk up. The lock takes care of the rest. The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. UWB 5 5 Merchant Video Hands-Free Access for Everyone at Home No more fingerprint enrollment or complicated setups. Easily share UWB access with family members so they can walk up and unlock the door just like you. Effortless, secure, and truly smart. Additional Unlocking Options, Choose Your Preferred Way Tap to Unlock with Home Key in Your Apple Wallet Simply add the Apple Home Key to your Wallet and unlock the 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%. Voice Control Unlocking Ask Siri or Alexa to open the door when your hands are full with groceries, kids, or on rainy days. Please note: Voice unlocking is only available in Apple Home and Amazon Alexa ecosystems. Scheduled Passwords Share a passcode that’s valid only during the timeframe you set, ideal for housekeepers, caregivers, and short-term guests. Offline One-Time Password Generate up to 8 passcodes per hour, even when the lock is offline, and issue them remotely to visitors, deliveries, or service providers. Note: One-time passwords can only be obtained via the Aqara Home app. More Ways to Unlock You can also unlock with a keypad passcode, remotely via the app (requires a Thread-enabled Matter controller) , a physical key, or an NFC card (Aqara NFC cards sold separately) Flexible and versatile smart home security. Battery Anxiety: No More! Easily Charge the 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. Through the interior USB-C port, you can recharge the device with a powerbank anytime, removing battery anxiety for good. 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 an exterior USB-C Emergency Charging Port, allowing you to power up with a power bank or a phone that supports USB-C to USB-C charging. Note: The USB-C port on the outer panel is for emergency unlock only, not normal charging . Previous page Next page 1 Check Door Compatiability 2 Installation Warnings 3 BHMA Certified 4 IP65 Weatherproof 5 Auto-Lock on Close Previous page Next page Can I use UWB and Home Key without a hub? Which Apple devices are required for UWB access? No. Requires a Thread-enabled Apple hub (HomePod 2 / mini, Apple TV 4K 2021/2022) and supported devices: Apple Watch Series 6+ (excl. SE) on watchOS 11.5+ and iPhone 11+ (excl. SE & 16e) on iOS 18.5+. iOS 26.2 recommended for the best UWB experience. Why can't my U400 pair with the app (non-Aqara app)? Check the following: • Use a Matter-over-Thread hub; • Enable IPv6 on your Wi-Fi; • Phone and hub on the same Wi-Fi; • Bluetooth turned on; • Lock within 5 m of the hub with no obstruction; • Press the Set button before pairing; Why is there no response or failed binding when using the Matter pairing code? The lock’s Matter code only works for the first binding. To connect to another ecosystem, generate a new pairing code from the connected ecosystem. If it still doesn’t work, reset the lock to reactivate the original code. If I don’t have a compatible hub, can I still use the lock? Yes. You can still use the basic features via Bluetooth in the Aqara app (like adding fingerprints, passcodes, and Auto Lock). However, features such as UWB, Home Key, remote unlocking, and automations will not be available. Why is the Aqara U400 failing to unlock with my fingerprint? Ensure your finger and the sensor are clean and dry; wipe both with a clean cloth. Some fingerprints (e.g., children or elderly) may be too faint to recognize. Try another person to check if it’s a fingerprint or device issue.",
    "aplus": "From the brand Previous page Empowering Your Smart Home Matter is the universal language of the smart home, developed to help devices from different brands work together. Aqara is an active supporter of Matter. As Matter is still evolving, your experience may vary depending on the platform. If you encounter any issues, Aqara is committed to addressing issues through continuous firmware updates and responsive support. Thank you for your understanding as we build a more connected smart home together. UWB Smart Lock U400 Visit the Store Aqara Smart Lock Visit the Store Aqara Cameras & Hubs Visit the Store Aqara Sensors Visit the Store Next page"
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