Introduction
The KENRONE Fingerprint Padlock offers a secure and convenient locking solution using biometric technology. This manual provides comprehensive instructions for setting up, operating, and maintaining your padlock. Please read this manual thoroughly before first use to ensure proper functionality and security.
Product Overview
The KENRONE Fingerprint Padlock is designed for durability and ease of use, featuring a zinc alloy body and IP66 waterproof rating. It supports up to 50 fingerprints and offers quick unlocking in approximately 0.5 seconds.
Key Features:
- Fingerprint Unlock: Your finger serves as the key, eliminating the need for passwords or physical keys.
- High Capacity: Stores up to 50 unique fingerprints, allowing multiple users access.
- Long Battery Life & Rechargeable: Equipped with a 250mAh lithium battery, providing extended use. Rechargeable via USB-C port.
- Sturdy and Durable: Constructed from zinc alloy with good cut resistance and a rustproof coating.
- Waterproof: IP66 rated, suitable for outdoor and wet environments.
- Versatile Use: Ideal for lockers, cabinets, toolboxes, luggage, bicycles, and various other applications.
Product Components:

The package includes the KENRONE Fingerprint Padlock, a USB charging cable, and this instruction manual.
Visual Overview:

This image provides a detailed view of the padlock, emphasizing its fingerprint sensor for quick access.

The fingerprint padlock offers a faster and more convenient unlocking method compared to traditional combination padlocks.

The padlock can be used for various items, including file cabinets, bicycles, and gym lockers.
Setup
Before initial use, it is recommended to register at least one administrator fingerprint. Any blank fingerprint can open the lock before registration. For security, register an admin fingerprint immediately.
Admin Fingerprint Registration:
- Use one blank fingerprint to open the lock. After opening, keep your finger on the sensor until the blue light flashes (approximately 3 seconds).
- Collect one blank fingerprint for 6 continuous times. The green light will turn on, indicating successful registration of the first admin fingerprint.
- After the light turns off, use the first admin fingerprint to open the lock. Do not remove your finger after opening until the blue light flashes.
- Collect another blank fingerprint for 6 continuous times. The green light will turn off, indicating successful registration of the second admin fingerprint.

Refer to the image above for a visual representation of the fingerprint registration process. The blue light indicates readiness for input, and the green light confirms successful capture.
User Fingerprint Registration:
- Use one of the registered admin fingerprints to open the lock. After opening, keep your finger on the sensor until the blue light flashes.
- Collect one blank fingerprint for 6 continuous times. The green light will turn on, indicating successful registration of the user fingerprint.
Up to 50 fingerprints can be registered in total, including admin and user fingerprints.
Video Guide: Fingerprint Setup
Watch the video above for a visual demonstration of the fingerprint registration process, including how to add admin and user fingerprints.
Operating Instructions
Unlocking the Padlock:
To unlock, simply place a registered fingerprint on the sensor. The lock will open in approximately 0.5 seconds if the fingerprint is recognized.
Charging the Padlock:
The padlock has a built-in 250mAh lithium battery. When the battery is low, a red light will flash to indicate that charging is required. To charge, connect the padlock to a USB power source using the provided USB charging cable. The charging port is located on the side of the padlock.

The padlock can be recharged using a standard USB power adapter or a power bank. A full charge ensures long-lasting operation.
Maintenance
To ensure the longevity and optimal performance of your KENRONE Fingerprint Padlock, follow these maintenance guidelines:
- Cleaning: Wipe the padlock body and fingerprint sensor with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Water Resistance: The padlock is IP66 waterproof, meaning it is protected against powerful water jets. While it can withstand rain and splashes, avoid prolonged submersion.
- Durability: The zinc alloy construction provides resistance against cutting and impact. However, avoid excessive force or intentional damage.
- Charging: Recharge the battery when the low battery indicator flashes to prevent complete power loss.

The padlock's design incorporates features like iron nickel plating and a rustproof coating to ensure long-term performance in various conditions.
Troubleshooting
Padlock Not Unlocking:
- Ensure your finger is clean and dry when placing it on the sensor.
- Verify that the fingerprint you are using is registered.
- Check the battery level. If the red light flashes, the battery is low and needs charging.
Electronic Key for Reset and Emergency Open:
In situations where fingerprints cannot be used (e.g., damaged sensor, completely dead battery), an electronic key can be used for emergency unlocking or to reset the lock.

Make sure the electronic key has power. Insert the electronic key into the Type-C port on the lock until the green light on the key turns on. The lock will then be reset, and any fingerprint can open it. This also serves as an emergency open function.
Factory Reset:
To perform a factory reset and delete all registered fingerprints:
- Use one of the admin fingerprints to open the lock. After opening, do not remove your finger and hold for 10 seconds until the red light flashes.
- Input one of the admin fingerprints again. The green light will turn on, indicating that the factory reset is successful and all fingerprints have been deleted.
After a factory reset, the lock returns to its initial state where any blank fingerprint can open it. You will need to re-register admin fingerprints.
Video Guide: Deleting Fingerprints and Factory Reset
The provided video guide demonstrates how to delete individual user fingerprints and how to perform a complete factory reset, which removes all registered fingerprints.
Specifications
| Feature | Detail |
|---|---|
| Brand | KENRONE |
| Model Name | Fingerprint padlock (KR-PL53555) |
| Material | Zinc Alloy |
| Color | Silver |
| Special Feature | Fingerprint Unlock |
| Lock Type | Fingerprint Padlock |
| Item Dimensions (L x W x H) | 2.1 x 0.83 x 3.5 inches |
| Item Weight | 8.8 ounces (0.25 Kilograms) |
| Waterproof Rating | IP66 |
| Battery | 250mAh Lithium Ion (included) |
| Charging Port | USB-C |
| Fingerprint Capacity | Up to 50 |
| Unlock Speed | Approximately 0.5 seconds |
Warranty and Support
KENRONE offers a 30-day return and replacement policy for any quality problems. For further assistance or inquiries regarding your fingerprint padlock, please contact KENRONE customer support. We are committed to providing timely solutions to any questions you may have.
For support, please refer to the contact information provided with your purchase or visit the official KENRONE website.