

🔐 Unlock the future of smart security—because your door deserves the smartest welcome.
The Aqara Smart Lock U300 is a premium biometric and keypad smart lock featuring Apple Home Keys integration and Matter over Thread connectivity for seamless multi-platform smart home control. It supports up to 25 fingerprints, multiple unlocking methods, and customizable security modes, all housed in a durable, water-resistant zinc alloy body with AES encryption and up to 10 months of battery life. Designed for modern homes, it offers both convenience and robust security with emergency USB-C charging and broad ecosystem compatibility.


























| ASIN | B0D496H9YV |
| Additional Features | Anti-Corrosion, Anti-Peeping Password, Auto-Lock, Fingerprint, Keyless, Preventing Peeking Password, Prevents Peeking Password |
| Best Sellers Rank | #29,241 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #138 in Deadbolts |
| Brand Name | Aqara |
| Color | Black |
| Connectivity Protocol | Matter |
| Control Method | App, Remote, Touch |
| Controller Type | Apple HomeKit |
| Customer Reviews | 3.8 3.8 out of 5 stars (422) |
| Finish Types | Painted |
| Included Components | Smart Lock U300 × 1 user manual × 1 installation diagram × 1 x AA battery × 4 mechanical keys × 2 accessories set × 1 back plate × 1 |
| Item Dimensions | 5.51 x 2.99 x 2.8 inches |
| Item Weight | 2.5 Kilograms |
| Lock Type | Biometric, Keypad |
| Manufacturer | Lumi United Technology Co., Ltd |
| Material Type | Zinc |
| Model Number | DL-D02D |
| Recommended Uses For Product | Home |
| Shape | Oval |
| Style Name | Modern Black |
| UPC | 192784001639 |
R**.
The Feature-Packed Smart Lock You've Been Waiting For!
I have been anxiously waiting for this lock since it was announced earlier this year and after finally getting my hands on it, I am impressed. This lock is packed with many features that make it not only a great lock but also allow it to be future-proof for newer technologies, such as Matter and Thread connectivity. Having owned various Aqara products, it’s clear that Aqara continues to go above and beyond with their products, and I’m also happy to see them develop locks for the United States market - I’ve always been a bit jealous that their other smart locks have only been available outside the United States, until now! * Overall Impressions * The lock is packaged very well and the hardware itself looks and feels premium, it has some heft, and the materials appear to be high quality. The lock has a touch screen with numbers that disappear when not in use, making it look like a high-end door lock that blends in with any other door locks you may have and doesn’t look out of place - other smart looks look like smart locks and they don’t match more contemporary or modern homes, but this lock is sleek and modern without overdoing it. This lock is also packed with newer features, like it supports the newer Matter standard, which allows you to easily pair the lock not only to Aqara’s ecosystem, but also supports systems like Apple HomeKit, Home Assistant, Google Home, and Amazon’s Alexa - just be sure you have the proper controllers in place (see my installation tips below). I installed this lock on my home office door, but I am planning on buying additional locks for my garage entry door and a few other doors that would benefit from easy keyless entry. * Digital Installation Guides * Although the kit itself does come with some basic getting started instructions including a physical installation template, Aqara is following suit with other modern companies in that they are mostly paperless. Although the lock doesn’t come with a traditional full paper manual, they have a lot of resources on their website such as installation videos and digital user manuals - I highly recommend reading through these free resources to familiarize yourself with the lock and its features and to ensure a successful installation. * Pros * This lock can be unlocked using so many different options like a fingerprint, a PIN code, using your iPhone or Apple Watch, an NFC tag for those who may not want to use their phone, and through the Aqara app using Bluetooth or Matter over Thread. If you’re more of a traditional key user, it even has a neatly hidden away keyhole underneath the fingerprint scanner. I like that Aqara doesn’t limit this lock to their own system and they have clearly been working hard to make it compatible with other smart home systems like Home Assistant, which is rarely heard of by other major manufacturers, and gives you a choice in the smart home system you want to use. You also don’t have to worry about being locked out if your batteries run out - this lock can be easily charged through a USB-C charging port, so you can easily give it enough juice so you can get back inside - I love that they included one on both sides, so no matter how you install your lock, you can easily charge it back up in an emergency. * Cons * I’ve noticed some reviews may not be happy with the auto-locking feature - you can easily work around this by enabling Passage Mode. I feel it’s important that Aqara kept security in mind given that it is a door lock, so although not a con for me, it’s worth noting that this feature may take some adjusting to. The passage mode feature can also be customized in the app, such as how long it stays unlocked, including indefinitely. Additionally, when installing the lock, it can be a bit tricky to align the plate to the door at first glance and determine how to best stuff the cable back into the door, but I highly recommend watching their installation videos which will help you get a perfect fit - don’t try to force anything. * Installation Tips & Suggestions * To fully utilize this lock’s features, you’ll need to ensure you have a compatible Matter controller with Thread capabilities, such as an Aqara M3 Hub, an Apple TV 4K, or an Apple HomePod Mini. The lock will still work without a controller, but adding a compatible controller will allow you to use additional features like remote unlocking and remote PIN management for your guests. I also highly recommend using the Aqara app and exploring all the settings and features of the lock - there are a lot of customizations you can do in the app such as muting the sound for a quieter household, customizing how long passage mode stays unlocked for (including permanently, until you relock the lock), and even locking the lockout entirely, for when you’re not expecting any guests, such as night for greater security. * Matter & Thread Support * Matter and Thread are newer kids on the block, and these features are still evolving. This lock supports Matter over Thread, and as long as your smart home supports both, you can unlock this lock’s potential. Since Matter supports multiple “fabrics”, I can have this lock not only paired to my Aqara M3 Hub but also have it linked to Apple Home using my Apple TV and Home Assistant, which also support Matter and Thread devices. Matter and Thread can take some getting used to, so I recommend reading up on how they work if you’d like to use these features. The Aqara app also makes it easy to use these features if you have a supported Matter hub like the M3, but it’s not required if you don’t want to use those features or if you already have another compatible hub like an Apple TV or HomePod Mini. * Aqara Support * Having owned other Aqara products, I’ve always had a great experience with their support team. They’re also very open to feature requests and suggestions. If you run into issues or have any ideas on how to improve their products like this lock, shoot them an email and hopefully, they can make it happen.
C**.
I like Aqara but it requires hubs to maximize the features
The Aqara U300 works great! I really love the passcode, fingerprint, and Bluetooth access. My house is about 2,200 sq ft, and I’m able to control the lock via Bluetooth throughout the entire house without any issues. If you want NFC or Apple Wallet features, you do need to purchase an Aqara Hub, but overall the user interface and functionality are excellent. Installation was easy for me since my garage door already had a handle-style lock. It is definitely more expensive compared to other smart lock systems, but in my experience, it’s worth it. I previously used an August lock, and the connection was very inconsistent. The Aqara U300 feels much more reliable and polished in comparison.
T**N
Massive malfunctioning disappointment
Well I installed it, everything was working just fine, door opened, closed, finger prints reading, code working, even the virtual key was working, wonderful. Then I left the house for the first time to take by dog out and when I returned it unlocked but then it said it got jammed for some reason and I couldn't open the door, even with the physical key. Had to call a locksmith which ended up getting the door open at 4x the cost of the unit but also ended up destroying the lock so ultimately a no go. Even after getting the door open, the back knob and physical key didn't work, which you would think would always be the case, but for whatever reason this malfunctioned it was preventing the key from working as well, so much for the failsafe. I got this to use with HomeKit, which it is not very compatible with, like the swipe to unlock feature did not work, even before it malfunctioned and jammed. Basically you just get alerts that the door is unlocked or locked or jammed. The proprietary app works for basic setup, but is confusing making you think you could connect to your matter unit (a HomePod in my case) but you can't, it's just for their own ecosystem (which after the claims and experience of this lock I will be avoiding). The unit is well constructed and feels solid, I was impressed putting it in place, but everything else from there seems like it was rushed out the door and needs more work.
A**Z
Todo ha sido perfecto: el envío, el producto y la entrega se ha realizado antes de lo previsto.
C**E
Funciona perfectamente, la instalación es fácil siguiendo las instrucciones además se puede usar Apple Homekey
G**R
Exceptional build quality, highly responsive and reliable. Thread and HomeKit integration are seamless! Bought a total of 3 because they work so well.
D**N
I bought 2 and although It can be a challenge to program these are the best and fastest fingerprint door locking handle on the market IMO. They can be setup and programmed via bluetooth prior to actually installing on the door, just pop the batteries in and using the ACARA app, create users and enter passcodes and fingerprints. Very study heavy duty door handle. Super fast. If that is all you want that's all you need to do. If you need to make changes or check your battery level you will have to be within 30' of the lock to be able to connect to it via the Acara app If you want remote functionality and notifications you'll need an Acara M3 hub to bridge these doorlocks to your wifi network. I have the Acara M3 hub and have connected and integrated it into my HomeAssistant server. This monitors my battery levels automatically and i can remotely control my locks all from my home assistant. Works awesome. I highly recommend this lock. I have 2 of them on my main house exterior door and my garage main door. Over 6 months of use and batteries are still at 90% under moderately heavy use.
J**T
1 star because I can’t give less. First one I purchased moisture developed under the keypad after a few months. Contacted them, they sent a replacement. The replacement came and would not setup. The main pad stayed dark so it could not be used. I was asked to send a video, which I did. Their email could not accept the video, so I had to compress them send and after a week I got a response saying they needed a longer video of me going through the setup process, which I couldn’t because there wasn’t a working pad. Needless to say I did not get a second replacement. Also the iPhone setup is horrible. After hours of googling and YouTube videos I finally managed to set my phone up to unlock (which is the only reason I purchased this model to begin with) Please do not purchase this product, it will only last a few months and give out. Absolute garbage.
Trustpilot
4 days ago
1 month ago