TCL K1 Fingerprint Smart Door Knob
TCL www.tcl.com $62.99 Price as of 07/27/2026 View on Amazon → ⓘ We may earn a commission when you buy through our links. This helps support MacSources and keeps our content free. Thank you!The TCL K1 Smart Door Knob combines fingerprint access, app control, and multiple unlocking options at an affordable price, though a few reliability issues keep it from being a perfect budget smart lock.
TCL is a global electronics company best known for its televisions, but the brand also produces smartphones, tablets, audio products, appliances, and other smart home technology. The company has built a strong reputation for offering premium-style features and modern technology at more affordable prices than many competing brands. TCL has become especially popular in the TV market thanks to its focus on display innovation, including Mini-LED and QLED technology, while still keeping products budget friendly for everyday consumers. Over the years, the company has grown into one of the largest TV manufacturers in the world and continues expanding its presence across the consumer tech industry.
Features
This smart lock is designed for standard US doors and combines strong security with convenient keyless entry features. It offers fast fingerprint unlocking in just 0.3 seconds and supports four different access methods including fingerprint, passcode, app control, and a traditional key. The lock can store up to 100 fingerprints, making it great for families or shared spaces, while temporary passcodes provide easy guest access. Features like auto-lock, anti-peeping keypad protection, privacy mode, and passage mode add extra convenience and security for everyday use. The lock also keeps sensitive data stored locally instead of in the cloud for improved privacy protection. Built with a durable brushed aluminum finish, it runs on four AAA batteries with up to 12 months of battery life and installs easily using only a screwdriver.
Unboxing and Install
Inside the box you will find the smart lock itself, the striker plate and lock hardware, along with a small instruction booklet to help guide you through setup and installation. One thing to note is that batteries are not included, so you will need to have those ready before getting started.
Installation was very straightforward and only took a few minutes. After lining everything up with the existing door holes, it mostly came down to screwing the lock together and securing it in place. Once I installed the batteries, the lock powered on right away and was ready to go. From there, I downloaded the companion app and went through the setup process, which was simple and easy to follow.
Overall Use
In day-to-day use, the smart lock worked fairly well overall, but I did run into a few issues during testing. The fingerprint reader was probably my biggest complaint since it rarely worked on the first try. Most of the time I had to scan my finger two or three times before the lock would finally recognize it and unlock the door. It still worked eventually, but it definitely was not as quick or seamless as I expected from a fingerprint smart lock.
I also noticed an issue with the physical button on the lock itself. When I pressed it, the lock would make a sound like it was activating a feature, but nothing would actually happen. From what I can tell, I believe it is supposed to keep the door unlocked or activate passage mode, but it never worked properly during my testing. Oddly enough, that same feature worked completely fine through the app, which makes me think it could possibly be a software bug or firmware issue rather than a hardware problem.
Outside of those issues, the app experience itself was simple and easy to use. Setup was straightforward, and I liked being able to manage settings, unlock the door remotely, and control features directly from my phone. The lock also feels solid once installed, and features like auto-lock add some extra peace of mind for everyday use.
Conclusion
Overall, this smart lock offers a good mix of convenience, security features, and modern functionality at an affordable price. While I did run into some issues with the fingerprint reader reliability and the physical passage mode button not working correctly, the lock still handled basic day to day use fairly well. The app experience was simple, installation was easy, and I liked having multiple ways to unlock the door depending on the situation.
One feature I especially appreciated was the USB power option on the bottom of the lock. If the batteries die unexpectedly, you can quickly plug in a power source to temporarily power the lock and still get inside without being locked out. There is also an emergency backup key included, which adds another layer of reassurance in case of battery failure or app issues. Those small details make the lock feel more practical for real world use and help avoid one of the biggest concerns people usually have with smart locks.
For more information, visit tcl.com
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