Evanshow Biometric Fingerprint Door Knob Review (2026): A Spec-Based Look
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
This evanshow fingerprint door lock biometric review covers a keyless entry solution for interior doors. The Evanshow Biometric Fingerprint Door Knob offers five ways to unlock: fingerprint, password, mechanical keys, IC card, and Tuya app control. It supports up to 100 fingerprints and 50 passwords. The unit measures 5.5 inches square and weighs 1.2 pounds. It fits wooden doors from 1.18 to 1.97 inches thick. Installation requires no drilling or wiring. You can manage access remotely via the companion application.
What stands out
- Supports up to 100 fingerprints for family and guests.
- Stores 50 distinct passcodes for flexible entry options.
- Integrates with the Tuya app for remote management and logs.
- Includes two mechanical keys as a backup access method.
- Fits doors between 1.18 and 1.97 inches thick without drilling.
Who it fits
Good fit for
This lock suits renters or homeowners who want a quick upgrade for bedrooms or offices. The no-drill installation makes it ideal for those who cannot modify their doors permanently. If you need to share access with many people, the high capacity for 100 fingerprints and 50 codes is useful. The Tuya app integration helps you track entry logs and grant temporary access to deliveries. It works well for apartments where simplicity and speed matter.
Who should skip it
Look elsewhere if you need a main exterior entry lock. This unit is designed for interior doors like bedrooms and offices. The data does not mention weatherproofing or high-security ratings for outdoor use. Also, note that you must register an administrator fingerprint first. Until you do, any fingerprint will unlock the door. If you cannot complete this setup step, the lock will not function securely.
Verdict: The Evanshow Biometric Fingerprint Door Knob provides a versatile, drill-free entry option for interior spaces. Its high capacity for users and app integration make it a practical choice for shared living areas.
Key specs explained
Access Methods: Fingerprint, code, key, IC card, app
This lock supports five distinct entry methods. You can use a fingerprint, a passcode, two physical keys, an IC card, or the Tuya app. This variety ensures you have options if batteries die or if you forget your code. It is useful for households with diverse needs. Compare this flexibility to standard locks that offer only one or two entry types.
Fingerprint Capacity: Up to 100
The device stores up to 100 unique fingerprints. This allows many family members and frequent guests to enter without carrying keys or remembering codes. It is suitable for larger households or shared office spaces. When shopping, compare this limit to models that restrict users to fewer than 50 entries for better long-term utility.
Passcode Capacity: 50
You can program up to 50 different passwords. This supports temporary access for cleaners, delivery personnel, or visitors without sharing your main code. It adds a layer of security and convenience. Look for this capacity when comparing to competitors, as fewer options limit your ability to manage guest access effectively over time.
App Compatibility: Tuya
The lock integrates with the Tuya smart home platform via Wi-Fi. You can manage access, view logs, and enable silent mode remotely. This connects the door knob to your existing smart ecosystem. Check if your other devices use Tuya or compatible apps to ensure seamless control and centralized management of your home security.
Design and build overview
According to the listing, the Evanshow Biometric Fingerprint Door Knob measures 5.5 inches in width, height, and length. The unit weighs 1.2 pounds. This compact, cubic form factor suggests it is designed for standard interior doors rather than heavy exterior entryways. The primary finish listed is BLACK 03, though Silver 02 and two Gold options are also available. You should choose the color that matches your existing hardware to maintain a consistent look in your home or office.
The lock is constructed as a single knob unit. It does not include separate levers or deadbolts. This simple layout makes it ideal for bedrooms, bathrooms, or interior room divisions where high-security exterior protection is not required. The design fits wooden doors that are between 1.18 and 1.97 inches thick. It supports both left and right swing configurations. This flexibility allows you to install it on most standard interior doors without needing specialized door preparations.
Installation requires no drilling or wiring. The package includes the knob, all necessary tools, and video tutorials. You can complete the setup in minutes without professional help. The physical controls consist of the fingerprint sensor and keypad on the exterior. Inside, you likely have a standard turn-button or thumbturn for privacy. This straightforward mechanical design ensures you can always enter your room even if the electronics fail, provided you have the included mechanical keys.
Setup and everyday use guide
Setting up this lock requires careful attention to the initial configuration. You must register an administrator fingerprint before using the device. Until an admin is set, any fingerprint will unlock the door. This is a critical first step to ensure security. The installation process is designed for ease. It requires no drilling or wiring. The knob fits wooden doors between 1.18 and 1.97 inches thick. It supports both left and right swing configurations. You can install it in minutes using the included tools and video tutorials. No professional help is needed.
For daily use, you have five access methods. You can enter a passcode, use a fingerprint, insert an IC card, use a mechanical key, or control it via the Tuya app. The app allows you to assign permanent or temporary access for family, guests, or delivery personnel. You can also track entry logs and enable silent mode for privacy. This helps you manage who enters your space without disturbing others.
Power management is straightforward. The lock includes a USB port for emergency power. You can connect an external power bank if the batteries die. Note that this port cannot charge the internal batteries. It only provides temporary power to unlock the door. The lock supports up to 100 fingerprints and 50 passwords. This capacity suits different family members and frequent guests. The Tuya app integration keeps everything synchronized. You can manage access remotely from your phone. This setup ensures you always have a reliable way to enter your home or office.
Before you buy this smart lock
This lock is designed for interior doors, such as bedrooms or offices, rather than main exterior entryways. You should verify that your door thickness falls between 1.18 and 1.97 inches before purchasing. The unit fits standard left or right swing doors without requiring drilling or wiring, making installation straightforward. You will need to ensure your smartphone is compatible with the Tuya app to manage remote access and view entry logs. Keep in mind that the USB port provides emergency power from an external bank but does not charge internal batteries. This device complements a video doorbell system by securing interior spaces while you monitor the front entrance. Regularly check battery levels to maintain reliable operation. The mechanical keys serve as a necessary backup if electronic components fail or power is lost. This smart lock integrates well into a broader home security setup for 1 products.
Check before you buy
- Confirm door thickness is between 1.18 and 1.97 inches.
- Ensure your phone supports the Tuya app for control.
- Register an admin fingerprint immediately to prevent unauthorized access.
- Check if the lock fits your door swing direction.
The product at a glance
Evanshow Biometric Fingerprint Door Knob
Best for: users needing flexible keyless entry options
- Access Methods
- Fingerprint, password, key, IC card, app
- Fingerprint Capacity
- Up to 100
- Passcode Capacity
- Up to 50
- App Compatibility
- Tuya
- Application
- Home, Office, Apartment, Bedroom, Hotel
- Included Hardware
- Knob
View on Amazon: Evanshow Biometric Fingerprint Door Knob Affiliate link
This Evanshow smart lock offers five entry methods: fingerprint, keypad, IC card, mechanical keys, and app control. It stores up to 100 fingerprints and 50 passwords. The Tuya app lets you manage access and view logs. It installs on doors 1.18 to 1.97 inches thick without drilling. The unit weighs 1.2 pounds and measures 5.5 inches square. It suits homes, offices, and apartments needing flexible access.
Pros
- Supports five access methods including fingerprint and app
- Stores up to 100 fingerprints and 50 passwords
- Installs without drilling on standard wooden doors
- Tuya app enables remote access management and logs
Cons
- Requires administrator fingerprint registration before use
- Emergency USB port does not charge internal batteries
- Fingerprint sensor may unlock if admin is not set
Good fit if
- You need keyless entry for multiple users
- You want app-based access control
- You prefer no-drill installation
Skip if
- You require battery charging via USB port
- You need instant use without admin setup
- You have doors thicker than 1.97 inches
Verdict: Evanshow Biometric Fingerprint Door Knob provides flexible access for homes and offices, provided you complete the initial admin setup correctly.
Specifications side by side
| Spec | Evanshow Biometric Fingerprint Door Knob |
|---|---|
| Access Methods | Fingerprint, password, key, IC card, app |
| Fingerprint Capacity | Up to 100 |
| Passcode Capacity | Up to 50 |
| App Compatibility | Tuya |
| Access Method | Keypad, Fingerprint, Key, Key Card |
| Application | Home, Office, Apartment, Bedroom, Hotel |
| Included Hardware | Knob |
| Dimensions | 5.5 × 5.5 × 5.5 inches |
| Weight | 1.2 pounds |
| Size | door lock |
| Color | BLACK 03 |
| Model | 003 |
Frequently asked questions
What types of doors does this lock fit?
The Evanshow Biometric Fingerprint Door Knob is designed for interior doors in homes, offices, apartments, and bedrooms. It supports standard left or right swing doors. You should verify your door thickness is between 1.18 and 1.97 inches. It is not intended for heavy exterior entryways. The cubic form factor suggests it suits standard interior applications rather than high-security front doors.
How many fingerprints can the device store?
The lock supports up to 100 unique fingerprints. This capacity allows multiple family members or employees to register their biometric data. You must register an administrator fingerprint first to enable full functionality. Until an admin is set, any registered fingerprint will unlock the door. This feature ensures flexible access for shared spaces like offices or apartments.
Does the lock require batteries?
The product listing does not specify the power source or battery type. It highlights keypad, fingerprint, key, and app access methods. Since it includes a mechanical key override, it remains functional during power loss. You should check the manual or packaging for specific battery requirements before installation. The Tuya app control suggests electronic components are involved.
What is the weight of the unit?
The Evanshow Biometric Fingerprint Door Knob weighs 1.2 pounds. This lightweight design makes it easy to handle during installation. It measures 5.5 inches in width, height, and length. The compact size fits standard interior door knobs. The low weight indicates it is not built for high-traffic exterior doors requiring heavy-duty hardware.
Can I use a key card to enter?
Yes, the lock includes key card access as one of its five methods. You can use an IC card alongside fingerprints, passwords, keys, and app control. This option is useful for guests or employees who prefer not to use biometrics. The card serves as a reliable backup if batteries die or the keypad fails. It adds flexibility for hotel or office environments.
Is the lock compatible with smart home apps?
The device supports control via the Tuya app. This allows you to manage access remotely or monitor usage. You can combine app control with traditional methods like fingerprints and keys. The app integration adds convenience for modern homes and offices. Ensure your smartphone is compatible with the Tuya platform before relying on this feature for daily access.
What color options are available?
The listed model comes in BLACK 03. This finish matches modern interior decor styles. The color is consistent with the compact, cubic design. Other color options may exist, but this is the specific variant reviewed. The black finish helps blend with standard door hardware. Check the product page for additional color choices if needed.
Does it include installation hardware?
The product includes the knob mechanism as part of the package. It is designed for standard interior doors with typical thicknesses. You may need to verify if mounting screws are included. The listing does not detail the full hardware kit. Ensure your door meets the 1.18 to 1.97-inch thickness requirement for proper fit. Installation is straightforward for left or right swing doors.