Fingerprint Door Lock Smart Door Knob with Handle - Keyless Entry

Our review of this Fingerprint Door Lock Smart Door Knob finds it best for homeowners and renters who want a simple, modern upgrade to interior or secondary exterior doors. The single biggest reason to buy is the convenience of multiple unlocking options: a reliable fingerprint sensor, Bluetooth app control and passcode entry let several people use the same lock without physical keys. Installation is straightforward and the design replaces a standard lever with a biometric knob that fits most common door preparations.

Key Features

• Multiple unlocking methods: Choose from fingerprint, Bluetooth via app, passcode, mechanical key or IC card so there is always a backup way to enter.
• Biometric speed: The semiconductor fingerprint sensor gives one-touch access that customers reported works consistently and quickly.
• App sharing and logs: Bluetooth app access allows sharing permanent, temporary or scheduled codes and viewing door opening history for easy access management.
• Easy installation: The lock installs with a screwdriver and fits standard left-hand and right-hand doors with common backset and hole sizes.
• Battery and emergency power: Powered by 4 AAA alkaline batteries with low battery reminder and a USB emergency charging port for peace of mind.
• Durable construction: Zinc alloy lock cylinder and keypad materials give a sturdy feel and long-lasting use in daily environments.

Who It's For

This lock is ideal for people who want a modern, keyless solution for bedrooms, home offices, apartments, storage rooms or garage entrance doors where hard wiring is not practical. It suits households that need shared access with family or short-term visitors and anyone who values quick biometric entry over fumbling for keys.

Those who should look elsewhere include owners of extra-thick doors outside the supported 1-3/8 in to 2 in range or anyone needing a heavy-duty, exterior-grade deadbolt for primary exterior security; this product is geared toward convenience and retrofit use on standard doors rather than replacing commercial or reinforced door hardware.

Pros & Cons

Pros

• Multiple unlocking options provide flexibility and reliable backups for everyday use.
• Fingerprint recognition is fast and praised by customers for consistent performance.
• App-based sharing and history make managing access convenient for families and short-term guests.
• Simple installation and compatibility with common door hole and backset measurements.

Cons

• Door thickness limits mean it will not fit thicker or nonstandard doors without modification.
• Requires 4 AAA batteries (not included), so users must monitor power and use emergency USB charging occasionally.

Specifications

Our Verdict

The Fingerprint Door Lock Smart Door Knob is a strong value for anyone wanting a user-friendly, retrofit keyless solution for interior or secondary doors. It combines fast fingerprint recognition, flexible Bluetooth and passcode options, and easy installation to deliver daily convenience and better access control without hard wiring. Buyers with standard door sizes will find it a practical upgrade that simplifies entry for families and frequent guests.

Frequently Asked Questions

Will this fit my door?
It fits doors 1-3/8 in to 2 in thick with a 2-1/8 in hole and a 2-3/8 in or 2-3/4 in backset; do not install if your door is out of this range.

What happens if the batteries die?
The lock uses 4 AAA batteries and has a low battery reminder; you can also use the USB emergency charging interface to power the lock temporarily.

Can I share temporary access?
Yes, the Bluetooth app supports sharing permanent, temporary or scheduled access codes with friends and family.