1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Tuya Smart Fingerprint Door Lock. This advanced biometric door lock offers multiple keyless entry options, including fingerprint recognition, passcodes, IC cards, and app control, along with traditional mechanical keys for backup. Designed for ease of use and enhanced security, it is suitable for various indoor wooden doors in homes, offices, apartments, and hotels.
2. Package Contents
Please verify that all the following items are included in your package:
- Front Handle Assembly
- Back Handle Assembly
- Mortise Lock
- Strike Plate
- Mechanical Keys (2)
- Spindle
- Screwdriver
- Mounting Screws
- Mounting Pins
- User Manual (detailed version)
3. Specifications
| Feature | Detail |
|---|---|
| Model Number | F3 |
| Product Name | Smart lock for indoor door |
| Material | Aluminium alloy |
| Fingerprint Technology | Semiconductor fingerprint |
| Fingerprint Recognition Speed | <0.5s |
| Fingerprint Rejection Rate | ≤0.01% |
| Power Supply | 4 * AAA DRY BATTERY (not included) |
| Emergency Power Supply | Type-C Emergency power supply |
| Lock Core Grade | Grade c |
| Fit Door Thickness | 30mm-50mm |
| Working Temperature | -20 to 60 °C |
| Suitable Door Type | Wooden Door, Stainless Steel Door, Indoor wooden doors, etc. |
| Unlocking Methods | App, Bluetooth, Mechanical Keys, Card, Password, Fingerprint |
| Connectivity | Bluetooth (Tuya Smart app) |
| Installation Method | Drilling installation (No need to modify existing holes for direct replacement) |
| Protection Level | No Waterproof |
| Handle Direction | Direction Reversible |
4. Installation
The Tuya Smart Fingerprint Door Lock is designed for easy installation, often serving as a direct replacement for existing cylindrical knob locks or split housing security locks without requiring new hole modifications. A detailed installation manual is included in your package. Please refer to it for step-by-step instructions.
4.1 Door Compatibility
- Door Thickness: Compatible with doors between 30mm and 50mm thick.
- Door Type: Suitable for wooden doors, stainless steel doors, and other indoor door types.
- Handle Direction: The handle direction is reversible, meaning there is no distinction between left and right opening doors.
5. Operation
5.1 Unlocking Methods
Your smart lock offers multiple convenient ways to unlock:
- Fingerprint Recognition: Utilizes advanced semiconductor biometric technology for fast (under 0.5 seconds) and secure identification. The system has a rejection rate of ≤0.01%.
- Passcode: Enter your personalized numerical code on the keypad.
- IC Card: Tap a registered IC card to unlock.
- Mechanical Key: Use the provided backup mechanical keys for traditional unlocking.
- Temporary Password: Generate time-limited or one-time passwords via the app for guests or service personnel.
- App Control (Remote Unlocking): Unlock your door remotely using the Tuya Smart app (optional, requires gateway).
5.2 Tuya Smart App Management
The Tuya Smart app provides comprehensive control and monitoring features:
- User Management: Add, delete, or modify user fingerprints, passcodes, and IC cards.
- Home Reminder: Receive notifications for door activity.
- Lock Opening History: View a record of all lock and unlock events.
- Abnormal Alarm: Get alerts for suspicious activity or tampering.
- Remote Unlocking: Unlock the door from anywhere (requires a compatible Tuya gateway).
- Temporary/Time-Limited Passwords: Create and manage access for specific periods.
Note: One device can only be connected to one mobile phone directly. If you need multiple users to manage the device, the primary user can authorize an administrator within the app.
5.3 Always-Open Function
This mode allows the door to remain unlocked without requiring verification for entry and exit.
To set Always Open Mode: Press the button on the inner door handle for 5 seconds, then release it after it flashes. The lock will now be in always-open mode. Repeat this operation to cancel the always-on mode.
6. Maintenance
6.1 Battery Installation and Replacement
- The lock requires 4 AAA batteries (not included).
- Ensure correct installation of the battery's positive and negative poles to prevent circuit board damage from a short circuit.
- The lock features an ultra-long range and will provide a low battery warning when power drops below 20%.
- In case of complete battery depletion, use the Type-C emergency power interface or the mechanical key for emergency access.
6.2 Cleaning
Wipe the lock surface with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the finish or electronic components.
7. Troubleshooting
- Q: Why can anyone unlock the door?
- A: Our door lock is initially set to unlock with any fingerprint. To prevent unauthorized access, it's crucial to register your admin fingerprint immediately after installation. Once an admin fingerprint is registered, only registered fingerprints will unlock the door.
- Q: What should I do if the door can still be unlocked by any finger after setting my fingerprints?
- A: If this occurs, it's possible your fingerprints were not programmed correctly. We recommend reviewing the detailed user manual or any available video tutorials for the correct registration process. Re-register your fingerprints carefully.
- Q: How can I verify successful fingerprint registration?
- A: After registering your first fingerprint, test the lock with an unregistered finger. If the unregistered finger cannot unlock the door, your programming was successful. If it can, please re-register your fingerprint following the instructions precisely.
- Q: How can I improve the accuracy of fingerprint recognition?
- A: When programming your fingerprints, place your finger at different angles and positions each time to ensure a larger and more comprehensive area of your fingerprint is scanned and stored by the sensor.
- Q: What happens if the battery's positive and negative poles are installed incorrectly?
- A: Incorrect battery installation can lead to a short circuit, potentially causing damage to the circuit board of the lock. Always ensure batteries are inserted with the correct polarity.
8. User Tips
- Protective Film: If you notice any scratches on the product upon arrival, please check if there is a protective film that can be peeled off. All products are brand new.
- App Connectivity: While one device connects to one phone, you can authorize other users as administrators within the Tuya Smart app for shared management.
- Initial Setup: Remember to register your admin fingerprint immediately after installation to secure the lock, as it is initially set to unlock with any fingerprint.
9. Warranty and Support
For any issues, questions, or support needs regarding your Tuya Smart Fingerprint Door Lock, please refer to the detailed manual included in your package or contact the seller directly. Ensure you retain your proof of purchase for warranty claims.





