Fingerprint Door Lock Smart Door Knob with Biometric - Keyless Entry

Our review of the Fingerprint Door Lock Smart Door Knob finds it best suited for homeowners and renters who want a straightforward, keyless interior lock with several modern access options. The single biggest reason to buy is the combination of fast fingerprint quick unlock and multiple backup methods, which makes daily use convenient while keeping privacy options like one-key anti-lock available for bedrooms or private rooms.

Key Features

• Five unlocking methods: Fingerprint, passcode, TUYA Bluetooth App, IC cards and physical keys provide redundancy so you are rarely locked out.
• App control via TUYA: Manage users, share E-codes and review log records from the TUYA Bluetooth App without ongoing fees or a WiFi requirement.
• Fast fingerprint access: The upgraded sensor claims a 99% recognition rate and unlocks in about 0.2 seconds for quick single-touch entry.
• Large user capacity: Stores more than 50 fingerprints and up to 100 IC cards, which is useful for families or small offices.
• Auto-lock and anti-lock options: Auto-lock can engage 5 seconds after closing and a one-key anti-lock secures privacy from the inside for admins only.
• Tool-free install and voice guide: Designed to fit standard US left- or right-handed interior doors and includes step-by-step voice prompts for easy setup.

Who It's For

The lock is ideal for people who want a modern, keyless solution for interior doors such as bedrooms, offices or rental units where WiFi is not required and Bluetooth app control is sufficient. Families and small property managers will appreciate the multi-user capacity and varied unlocking choices for different users.

It is less appropriate for exterior doors that require weatherproofing or for users who need remote access over the internet, since the unit uses Bluetooth TUYA App control only and does not provide native WiFi or cloud-based remote unlocking.

Pros & Cons

Pros

• Multiple unlocking options reduce reliance on any single method and increase convenience.
• Fast fingerprint recognition speeds daily use and simplifies access for frequent users.
• App-based administration and logs let an owner manage access and share temporary codes without subscription fees.
• Simple installation and voice guidance make setup approachable for DIYers.

Cons

• Fingerprint recognition receives mixed feedback from users, so occasional re-enrollment or cleaning may be needed.
• No WiFi support means true remote unlocking and cloud features are not available.

Specifications

Product type	Smart door knob / interior door lock
Unlock methods	Fingerprint, passcode, TUYA Bluetooth App, IC cards, physical keys
Fingerprint capacity	Supports 50+ fingerprints
IC card capacity	Up to 100 IC cards
Auto-lock	Configurable auto-lock (default 5s)
App	TUYA Bluetooth App (no fees, not WiFi)
Warranty	At least 1 year product warranty

Our Verdict

The Fingerprint Door Lock Smart Door Knob is a practical, value-oriented choice for interior use where fast biometric access and flexible unlocking methods matter. It provides strong convenience and user management without subscription costs, but those needing remote WiFi access or outdoor weatherproofing should look elsewhere.

Frequently Asked Questions

Can multiple users be added?
Yes, the lock supports more than 50 fingerprints and up to 100 IC cards for multiple users.

Does the app require a subscription or WiFi?
No, the TUYA Bluetooth App does not charge fees and works over Bluetooth; the lock does not include WiFi.

Is installation difficult?
No, the lock fits most US standard left- and right-handed interior doors and includes voice guidance for easy, drill-free installation.