Fingerprint Door Lock Black - Smart Fingerprint Door Knob with App

In this review of the black Fingerprint Door Lock, the bottom line is simple: it is a practical, compact smart knob for homeowners who want keyless convenience with several backup options. The KLLOQUE lock combines a fast thumbprint sensor, Bluetooth app control and a traditional keyway so users can choose between biometric, app-based, or keyed entry. Installation is straightforward for most US doors, and the built-in rechargeable battery plus 5s auto-locking make it a strong fit for bedrooms, apartments, and interior doors where privacy and quick access matter.

Key Features

• 3-in-1 Access: Offers thumbprint, Bluetooth app control and a physical key so you always have a reliable entry method.
• Three operation modes: Passage, entrance and privacy modes are selectable by rotating the thumb turn, giving flexible control for households and rentals.
• Local fingerprint storage: Stores up to 20 fingerprints locally so biometric data stays on the device and not in the cloud.
• Rechargeable power: Built-in 400mAh battery recharges in 3 to 4 hours and includes a low-battery alarm to avoid unexpected outages.
• Simple installation: Installs with a screwdriver and fits most US doors, with clear orientation marks to help the knobs seat correctly.
• App management: Bluetooth-range app lets you add fingerprints, view unlock records and create temporary access for guests.

Who It's For

The lock is well suited for apartment dwellers, parents securing bedroom doors, and Airbnb or short-term rental hosts who need to grant temporary access without changing keys. The combination of app control and a physical key makes it useful where smartphone control is convenient but not the only option.

It is less appropriate for exterior doors that require remote Wi-Fi control unless you purchase a separate gateway, and buyers who need enterprise-grade cloud management or higher fingerprint capacity should look at more advanced systems.

Pros & Cons

Pros

• Easy to install on most US doors with clear alignment marks and a simple screwdriver fit.
• Convenient fingerprint unlocking with up to 20 fingerprints stored locally for privacy.
• Flexible access options: app control, biometric entry and traditional key backup.
• Rechargeable battery with visual power display and low-battery alert reduces maintenance hassle.

Cons

• Fingerprint recognition speed and reliability received mixed feedback from some users, so consistency may vary by user and finger condition.
• Bluetooth app control works only within Bluetooth range; Wi-Fi requires a separately purchased gateway.

Specifications

Product type	Smart fingerprint door knob
Access methods	Fingerprint, Bluetooth app, physical key
Fingerprint capacity	Up to 20 fingerprints
Battery	Built-in 400mAh rechargeable battery (3-4 hr charge)
Auto-lock	5s auto locking feature
App control	Bluetooth-range app; Wi-Fi needs separate gateway
Color	Black

Our Verdict

The KLLOQUE black Fingerprint Door Lock is a practical, value-oriented choice for interior doors and short-term rental properties that need flexible access. Its 3-in-1 access methods, rechargeable battery and local fingerprint storage make it secure and convenient, though those needing remote Wi-Fi control or flawless fingerprint consistency should plan for an additional gateway or evaluate higher-tier models.

Frequently Asked Questions

How many fingerprints can the lock store?
The knob stores up to 20 fingerprints locally on the device.

Does the app work over Wi-Fi?
The included app works within Bluetooth range; remote Wi-Fi control requires a separately purchased gateway.

How long does the battery take to charge?
The built-in 400mAh battery typically takes 3 to 4 hours for a full charge and includes a low-battery alarm.