1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Keyless Fingerprint Security Furniture Door Lock. Designed for enhanced security and convenience, this biometric lock offers quick and reliable access to your furniture without the need for traditional keys. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of your device.

2. Features
- Keyless Convenience: Access your furniture with a simple fingerprint scan, eliminating the need for physical keys.
- Rapid Identification: High-sensitivity recognition module allows for unlocking in less than 1 second, with a fingerprint misidentification rate of less than 0.001%.
- Advanced Algorithm: Millimeter-level high-performance chip and smartphone-level algorithm ensure precise and fast fingerprint recognition.
- Low Power Consumption: Designed for extended battery life, reducing the need for frequent charging.
- Battery Status Indicator: A green light indicates a fully charged battery, while a red light signals a low battery.
- Durable Construction: Made from zinc alloy with a thickened and broadened lock body, offering excellent aging, corrosion, and wear resistance for smooth opening and closing.
- USB Charging: Conveniently rechargeable via a standard USB interface.


3. Specifications
| Attribute | Detail |
|---|---|
| Model Number | 488579 |
| Material | Zinc Alloy |
| Doorknob Function | Biometric |
| Ways To Unlock | Fingerprint |
| Power Source | Built-in Rechargeable Battery |
| Cut Out Diameter | 18mm |
| Available Sizes | 20mm, 22mm, 30mm, 32mm |
| Origin | Mainland China |

4. Package Contents
Ensure all items are present and in good condition upon opening the package.
- 1 x Fingerprint Lock (selected size and color)
- 1 x L-Bracket
- Mounting Screws
- User Manual (this document)

5. Installation
Before installation, ensure you have the correct tools, including a drill, screwdriver, and measuring tape.
- Prepare the Mounting Surface:
- Measure and mark the desired location for the lock on your furniture (drawer, cabinet door, etc.).
- Using the provided dimensions (refer to Figure 4), drill an 18mm diameter hole for the lock cylinder.
- Install the Lock Body:
- Insert the lock cylinder through the drilled hole from the front of the furniture.
- Secure the lock body from the inside using the provided nut.
- Attach the L-Bracket:
- Position the L-bracket on the inside of the furniture, aligning it with the lock's latch mechanism.
- Ensure the latch can freely engage and disengage with the bracket when the lock is operated.
- Secure the L-bracket with the provided mounting screws.
- Test Installation:
- Before programming fingerprints, manually check that the lock mechanism operates smoothly and securely.


6. Operating Instructions
6.1 Initial Setup and Fingerprint Registration
- First-time Use: The lock is in factory default mode. Any fingerprint can unlock it initially.
- Registering Administrator Fingerprint:
- Press and hold the fingerprint sensing area until the blue light flashes.
- Place your finger on the sensor. The blue light will flash, then turn green. Remove your finger.
- Repeat placing and removing the same finger 5 times, ensuring the green light flashes each time.
- Upon successful registration, the green light will stay solid for a moment, then turn off. The first registered fingerprint is the administrator.
- Registering User Fingerprints:
- Briefly press the fingerprint sensing area with the administrator's finger. The blue light will flash.
- Immediately place the new user's finger on the sensor. The blue light will flash, then turn green. Remove the finger.
- Repeat placing and removing the new user's finger 5 times.
- Upon successful registration, the green light will stay solid for a moment, then turn off.
- You can register up to 20 fingerprints in total.
6.2 Unlocking the Lock
- Place a registered finger on the fingerprint sensing area.
- The lock will unlock in less than 1 second if the fingerprint is recognized.
- The lock will automatically re-lock after a few seconds.

6.3 Deleting Fingerprints
- Press and hold the fingerprint sensing area with the administrator's finger for approximately 5-7 seconds until the red light flashes.
- Release the finger. The red light will flash rapidly, then turn off. All registered fingerprints are now deleted.
6.4 Charging the Battery
- When the battery is low, a red light will be displayed on the lock.
- Connect a standard USB charging cable to the USB charging port on the lock (refer to Figure 9).
- Connect the other end of the USB cable to a power source (e.g., USB adapter, computer USB port).
- During charging, the indicator light will show charging status (typically red or orange).
- When fully charged, the indicator light will turn green.
- The built-in rechargeable battery is designed for low power consumption, so frequent charging is not required.



7. Maintenance
- Cleaning: Wipe the fingerprint sensing area and lock body with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Battery Care: Recharge the battery when the low battery indicator appears. Avoid completely draining the battery for extended periods to prolong its lifespan.
- Environmental Conditions: The lock is designed for indoor use. Avoid exposing it to extreme temperatures, direct sunlight, or high humidity, which can affect performance and durability.
- Regular Checks: Periodically check the mounting screws and L-bracket to ensure they are secure.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lock does not unlock with registered fingerprint. |
|
|
| Red light flashes continuously. | Low battery. | Charge the lock immediately using the USB charging port. |
| Cannot register new fingerprints. |
|
|
| Lock feels loose after installation. | Mounting screws or nut are loose. | Tighten all mounting screws and the lock cylinder nut. |
9. User Tips
- For best recognition, ensure your finger is clean and dry when scanning.
- Register multiple angles of your primary finger to improve recognition accuracy.
- Consider registering a secondary finger (e.g., from your other hand) as a backup.
- Keep the USB charging cable accessible for convenient recharging.
10. Warranty and Support
This product comes with a warranty as per the seller's terms. For specific warranty details, please refer to your purchase documentation or contact the seller directly.
For technical support or assistance with your fingerprint lock, please contact the Luckyy Store customer service. Provide your model number (488579) and a detailed description of the issue for faster service.
Warranty Information (from seller's notice):
- Guaranteed Quality or Full Refund.