Smart Door Knob,Blacksmith 4 in 1 Door Knob With Fingerprint & App Control & Password &Keys,Biometric Smart Door Lock for Home, Apartment, Office,Black 
Smart Door Knob,Blacksmith 4 in 1 Door Knob With Fingerprint & App Control & Password &Keys,Biometric Smart Door Lock for Home, Apartment, Office,Black 
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Smart Door Knob,Blacksmith 4 in 1 Door Knob With Fingerprint & App Control & Password &Keys,Biometric Smart Door Lock for Home, Apartment, Office,Black 

4.1 stars out of 287 reviews
(4.1)|
287 ratings

Key item features

The Blacksmith Smart Door Knob provides a keyless entry system with smart deadbolt functionality.This electronic door lock features a 4-in-1 unlocking system, including fingerprint recognition, app control, password and access with 2 traditional keys.The door knob is presented in a black color.Ideal for a variety of locations such as homes, apartments, offices, bedrooms, living rooms, and wardrobe spaces.A complimentary application allows for comprehensive control, enabling you to add fingerprints and passwords, review unlock records, and configure auto lock, passage mode, and privacy mode.The app's bluetooth control range is approximately 5 meters.The biometric smart lock swiftly recognizes fingerprints in just 0.3 seconds.It supports the storage of up to 100 unique fingerprints.The system offers 50 access codes that can be shared with family members for convenient entry.A built-in sensor detects when the door is closed and automatically engages the lock for enhanced security.The auto-locking feature allows you to set a specific duration, such as 5 seconds, for the door to lock automatically after entry.Designed for effortless installation, requiring only a screwdriver and minutes to set up.This smart door knob is compatible with most standard US doors.Constructed from durable metal material.Assembled product dimensions are 2.36 inches in height, 2.75 inches in length, and 2.36 inches in width.
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was $69.99
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4.327453416149068 stars out of 5, based on 4027 seller reviews(4.3)
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4.1 out of 5 stars
stars287 ratings158 reviews
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Showing 1-3 of 158 reviews

Jan 2, 2026
Linh
Item details
Color: Bronze
Finish: 3 in 1
Sold byGlobinaDelivered byWalmart
5 out of 5 stars review

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You Pay For What You Get

For the price, the door's fingerprint feature works well. It can be a little unreliable at times, but you should always have a key or your phone as backup anyway. Overall, I'm really happy with it—definitely better than spending over $200, especially if you're just renting. It's provide ease of use when entering the house. Make me feel like my house is a smart home now.

Helpful?4S758T2L48JN17345566376
Nov 20, 2025
Megan
Item details
Finish: Bronze
Sold byGlobinaDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Really easy to install and set up, love that I can give access to my kids and assign their name because I get an alert when they open the door. I not only know someone entered the house, but who.

Helpful?4S758T2L48JN17345566376
Sep 21, 2025
JJJaydah
Item details
Finish: Bronze
Sold byGlobinaDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Easy to install, directions are clear, fits existing door and simple download set up the password fingerprint. I bought one for my Grand Daughter's Dorm room she loves that it's keyless, but can use a key. Also, get phone notifications of entry attempts.

Helpful?4S758T2L48JN17345566376