






🔐 Unlock the future of security with a touch—because your door deserves smart protection.
The HEI LIANG HL-1 Smart Biometric Door Knob combines ultra-fast 0.5-second fingerprint recognition, encrypted app control, and a hidden mechanical keyhole for triple-layer security. Crafted from impact-resistant stainless steel and aluminum alloy, it fits standard US doors and supports up to 20 fingerprints. With real-time access logs, temporary guest codes, and intrusion alerts via Bluetooth app, it’s perfect for homes, offices, and rental properties. Easy to install with no wiring and powered by a rechargeable battery with low-battery warnings.




| Brand | HEI LIANG |
| Special Feature | Easy to Install |
| Lock Type | Biometric |
| Item dimensions L x W x H | 9.29 x 2.99 x 2.99 inches |
| Material | Zinc |
| Recommended Uses For Product | Bedroom doors, cloakroom doors, apartments, offices, hotels |
| Style | Smart Door Knob |
| Color | Black |
| Number of Pieces | 1 |
| Finish Type | Polished |
| Included Components | Lock And Key |
| Controller Type | Android, Hand Control, Mechanical knob |
| Shape | Round |
| Item Weight | 1.49 Pounds |
| Control Method | App |
| Connectivity Protocol | Bluetooth |
| UPC | 758984224249 |
| Model Name | HL Knob Lock 1 |
| Manufacturer | HEI LIANG |
| Part Number | SQ-1 |
| Item Weight | 1.49 pounds |
| Product Dimensions | 9.29 x 2.99 x 2.99 inches |
| Item model number | HL-1 |
| Batteries | 1 AAAA batteries required. |
| Size | 2.99*3.22 |
| Finish | Polished |
| Item Package Quantity | 1 |
| Special Features | Easy to Install |
| Batteries Included? | No |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Ion |
T**N
Great Fingerprint Door Lock, Easy to Use and Install
I’ve been using this fingerprint door lock for a while now, and overall I’m really satisfied with it. The setup through the app was straightforward, and installation was simple with clear instructions. Day-to-day use is smooth and convenient. Fingerprint recognition is fast and accurate most of the time.The only issue I’ve noticed is when my hands are slightly moist, like after getting out of the shower. In those cases, the fingerprint sensor doesn’t register my finger, so I have to use the app to unlock the door. Thankfully, the app works reliably and connects quickly, so it’s just a minor inconvenience.Overall, it’s a solid and user-friendly lock that adds both security and convenience to my home. I would definitely recommend it.
E**R
Works great 👍
Loved it works perfect, looks great great value for the money very easy to set up just follow the instructions. Looks to be high quality.Highly recommend 👍
A**R
Easy to install and set up fingerprints
Very easy to install and program on the app. I LOVE THIS DOOR NOB!!!! It's amazing and works very well, just make sure your finger is dry or it doesn't recognize your finger print.
M**B
Secure for sure!
EDIT: changing my review because I haven't even had this thing a month yet and already it has stopped working. Trying to unlock the door with my thumb, it turns green and sounds like it is unlocking, but it isn't. I have to use the key to get in now. Too pricey of a doorknob for it to fail less than a month in.I chose this type of doorknob because it has a biometric option. My last doorknob was key only and of course it got lost, leaving us to have to damage the doorknob & door itself. App setup and fingerprint recognition is easy enough. It registers more than 1 print. There's also a cool feature to lock & unlock the door from the app. Packaging comes with c type charging cable (no block) Ive used it a lot so far and have yet to have to recharge. *charge before initial use* I purchased this particular type for my bedroom door. It's perfect for those sneaky roomies, or in my case, kids who always slither in and take your things. I got tired of asking for my room and things to be left alone, so I went to the extreme. The only thing im not very fond of is the beeping sound when you lock/unlock the door. Ive yet to find a way to quieten it off.
C**S
A Game-Changer for Home Security!
Rating: ⭐️⭐️⭐️⭐️⭐️I recently installed a fingerprint door system in all the entryways of my home, and I must say, it has been a game-changer for home security! This state-of-the-art technology has completely revolutionized the way I protect my home and loved ones.First and foremost, the convenience of the fingerprint door is unmatched. No more fumbling for keys or worrying about forgetting them! With just a simple touch of my finger, I can effortlessly unlock the door and enter my home. It's such a relief to have a hassle-free entry every time, especially when I have my hands full with groceries or other items.The security aspect of this system is truly top-notch. The fingerprint recognition technology is highly accurate and reliable. I can rest assured knowing that only authorized individuals have access to my home. This eliminates the risk of lost or stolen keys falling into the wrong hands. The peace of mind this brings is priceless.Moreover, the fingerprint door adds an extra layer of safety for my family. I no longer have to worry about my children misplacing their keys or strangers gaining access to our home. This system ensures that only trusted individuals can enter, providing a sense of security that is unparalleled.The installation process was smooth and hassle-free. The fingerprint door seamlessly integrates into any entryway, and the setup was quick and easy. The user interface is intuitive, making it simple to enroll new fingerprints and manage access permissions.In terms of durability and reliability, this fingerprint door system has exceeded my expectations. It is built to withstand daily use and has proven to be highly dependable. The sleek design is also a bonus, adding a touch of modernity to my home's aesthetic.Overall, I highly recommend the fingerprint door system for anyone looking to enhance their home security. Its convenience, accuracy, and reliability make it a worthwhile investment. Say goodbye to traditional keys and welcome a new era of secure and effortless access to your home. Trust me, you won't regret it!
B**D
Overall good, but could be better
Installation was easy and straightforward. Lock pretty much works as described. Quality seems good. The only issue I have is you have to be within 3’ to 4’ of lock for app to connect. Would be nice to be able to lock or unlock from anywhere in home. Also app always shows lock battery fully charged although mine went completely dead. The model I received has a rechargeable battery instead of replaceable batteries as described.
R**L
Amazing lock and easy to use!
The electronic lock has completely changed the way I manage home security, letting me lock and unlock my door with just my phone. Installation was quick and easy, and the app makes it simple to grant access to guests or check who’s come and gone. I love the convenience of remote access and voice assistant compatibility. The only downside is that it runs on batteries and occasionally the app takes a moment to connect. Overall, it’s a reliable and smart upgrade that adds both security and convenience to my daily routine.
M**T
Great product, heavy duty, very configurable.
Super easy to install, heavy duty, slightly oversized as needed and works very well. This is a very good choice for a fingerprint/code/guest code digital indoor lock. Get it if you need one!
Trustpilot
3 weeks ago
4 days ago