1. Introduction
Thank you for choosing the NBFRUTK K6 Keyless Entry Door Lock. This smart lock offers advanced security and convenience for your home with multiple unlocking methods, including fingerprint, keypad code, smartphone app control, and traditional mechanical keys. This manual provides detailed instructions for installation, operation, and maintenance to ensure optimal performance and security.
2. Product Overview
The NBFRUTK K6 is a robust and versatile keyless entry system designed for front doors. It combines a deadbolt with a handle set, offering a complete and secure solution. Key features include:
- Multiple Unlock Modes: Fingerprint, keypad code, app control, and mechanical key.
- Fast Fingerprint Recognition: Unlocks within 1 second with a 99.99% recognition rate.
- Auto-Lock Function: Customizable automatic locking time (10-99 seconds) or instant one-touch locking.
- Enhanced Security: Anti-peeping password input, one-time password generation.
- Smart Features: Low battery indicator, silent mode, illuminated keypad.
- Durable Construction: Made from sturdy zinc alloy with an IP54 weatherproof rating.
- Emergency Power: USB port for emergency charging.
- App Control: Manage users, view unlock records, and control the lock via Bluetooth. Remote control and voice assistant integration (Alexa, Google Assistant) available with a separately purchased gateway.
Image: The NBFRUTK K6 Keyless Entry Door Lock with handle set, shown installed on a door, with a smartphone displaying the unlock app interface.
3. Safety Information
Please read and follow all safety instructions carefully to prevent injury or damage to the product.
- Do not attempt to disassemble or repair the lock yourself. Refer to qualified service personnel.
- Use only specified AA batteries. Do not mix old and new batteries or different types of batteries.
- Ensure the door is properly aligned and closes smoothly before installing the lock.
- Keep mechanical keys in a safe location outside the home, accessible only for emergencies.
- Avoid exposing the lock to extreme temperatures or direct water immersion, despite its IP54 rating.
- Regularly check battery levels and replace batteries promptly when the low battery warning is indicated.
4. Specifications
| Feature | Specification |
|---|---|
| Brand | NBFRUTK |
| Model | K6 |
| Lock Type | Biometric (Fingerprint) |
| Material | Zinc Alloy |
| Color | Silver |
| Dimensions (L x W x H) | 12.5 x 7.9 x 3.6 inches |
| Item Weight | 1.7 Kilograms (3.74 pounds) |
| Connectivity | Bluetooth (App Control) |
| Power Source | 4 x AA Batteries (not included) |
| Battery Life | Approximately 1 year |
| Emergency Power | USB Charging Port |
| Weather Resistance | IP54 |
| User Capacity | 100 Fingerprints, 100 Passwords |
| UPC | 757876940090 |
5. Setup and Installation
The NBFRUTK K6 lock is designed for easy DIY installation, typically taking around 15 minutes with a screwdriver. It is compatible with all American standard left-opening and right-opening doors.
5.1 Door Compatibility Check
Before installation, verify your door's dimensions and compatibility. Refer to the diagram below for required measurements:
Image: Diagram illustrating door hole diameter (2-1/8" / 54mm), minimum distance (4" / 101.6mm), backset (2-3/8" or 2-3/4" / 60mm or 70mm), and door thickness (1-3/8" to 2-1/8" / 35mm-55mm). Also shows compatibility with left-handed and right-handed doors, and single cylinder deadbolts.
5.2 Installation Steps
- Remove Existing Hardware: Carefully remove your current door lock and handle set.
- Install Latch and Strike Plate: Insert the new latch into the door edge and secure it. Install the strike plate on the door frame.
- Install Exterior Assembly: Place the exterior keypad and handle assembly onto the door, ensuring the spindle passes through the latch.
- Install Interior Assembly: Connect the interior assembly, ensuring cables are properly routed and not pinched. Secure with screws.
- Install Batteries: Insert 4 AA batteries into the interior unit.
- Test Operation: Test all locking and unlocking functions manually before closing the door.
Image: A person performing a DIY installation of the NBFRUTK K6 smart lock on a black door, demonstrating the ease of setup.
Image: Visual representation of the NBFRUTK K6 lock installed on both left-handed and right-handed doors, confirming universal compatibility.
6. Operating Instructions
The NBFRUTK K6 offers multiple convenient ways to unlock your door.
Image: A collage demonstrating four unlock methods: fingerprint, app, mechanical key, and password, with the lock and a smartphone.
6.1 Fingerprint Unlock
The lock recognizes fingerprints within 0.3 seconds, unlocking the door in under 1 second. You can store up to 100 unique fingerprints.
- Enroll Fingerprints: Follow the instructions in the companion app to add new fingerprints.
- Unlock: Place your registered finger on the fingerprint sensor. The lock will unlock if the fingerprint is recognized.
Image: A person placing their finger on the fingerprint sensor of the NBFRUTK K6 lock, highlighting the 0.3-second recognition time.
6.2 Keypad Code Unlock
The keypad allows for up to 100 user passwords. It features an illuminated keypad for night use and an anti-peeping function.
- Set Passwords: Use the app to create and manage user passwords.
- Unlock: Enter your valid password on the keypad, then press the unlock button.
- Anti-Peeping Function: You can enter random digits before or after your actual password to prevent others from guessing your code. For example, if your password is '12345', you can enter '98712345654'.
- One-Time Password: Generate temporary codes via the app for guests or deliveries.
Image: A hand entering a password on the NBFRUTK K6 keypad, with an example of the anti-peeping password feature showing random digits before and after the correct password.
Image: A delivery person on the phone, receiving a one-time password for the NBFRUTK K6 lock, illustrating the convenience of temporary access codes.
6.3 App Control (Bluetooth)
Connect your smartphone to the lock via Bluetooth for convenient control and management.
- Download App: Search for the companion app (e.g., Tuya Smart or Smart Life) on your app store.
- Pair Device: Follow the in-app instructions to pair your lock via Bluetooth.
- Unlock/Lock: Use the app interface to unlock or lock your door.
- User Management: Add, modify, or delete fingerprints and passwords.
- Unlock Records: View a log of all lock and unlock events.
Image: A man sitting on a chair, managing users and checking unlock records on his smartphone, demonstrating the app's management capabilities for the NBFRUTK K6 lock.
6.4 Mechanical Key Unlock
Two spare mechanical keys are provided for emergency access or as a backup.
- Insert the key into the keyhole located on the deadbolt.
- Turn the key to unlock the door.
Image: A person using a traditional mechanical key to unlock the NBFRUTK K6 smart lock, illustrating the backup entry method.
6.5 Locking the Door
- Automatic Locking: The lock can be set to automatically lock after 10-99 seconds. This setting is configurable via the app.
- One-Click Locking: Press and hold the lock button on the keypad for 2 seconds to immediately lock the door.
Image: A split image showing the one-click locking mechanism (pressing the lock button) and the auto-locking feature with a timer icon, demonstrating convenient locking options.
6.6 Silent Mode
Activate silent mode via the app to disable keypad sounds, ideal for quiet environments or late-night entry/exit.
Image: The NBFRUTK K6 lock on a door, with a muted speaker icon, while people sleep peacefully in the background, illustrating the silent mode feature.
6.7 Gateway Integration (Optional)
A separately purchased gateway allows for remote control and voice assistant compatibility.
- Remote Control: Lock or unlock your door from anywhere via the app.
- Status Monitoring: Check the lock's status (locked/unlocked) in real-time.
- Voice Control: Integrate with Amazon Alexa or Google Assistant for voice commands (e.g., "Alexa, open the door").
Image: A diagram showing the NBFRUTK K6 smart lock connecting to a gateway, which then connects to a Wi-Fi router, illustrating the setup for remote control.
Image: A woman at a desk interacting with an Alexa device, with a speech bubble showing "Alexa, open the door", demonstrating voice control compatibility with the NBFRUTK K6 lock.
7. Maintenance
7.1 Battery Replacement
The lock is powered by 4 AA batteries (not included) with an expected life of over 1 year. The lock will provide a low battery warning when replacement is needed.
- When the low battery indicator appears, replace all 4 AA batteries promptly.
- Ensure correct polarity when inserting new batteries.
7.2 Emergency Power
In case of complete battery depletion, the lock can be temporarily powered via a USB power bank connected to the emergency charging port.
Image: A collage showing the NBFRUTK K6 lock's power features: 2 spare keys, USB emergency charging, low battery warning, and the requirement for 4 AA batteries.
7.3 Cleaning
Wipe the lock's exterior with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the finish or electronic components.
7.4 Weather Resistance
The lock has an IP54 protection level, making it resistant to dust and splashes of water. It is designed to operate in temperatures ranging from -22°F to 158°F (-30°C to 70°C).
Image: Three panels showing the NBFRUTK K6 lock's durability: IP54 waterproof in rain, functional in -22°F (-30°C) snowy conditions, and functional in 158°F (70°C) desert heat.
8. Troubleshooting
If you encounter issues with your NBFRUTK K6 lock, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lock does not respond | Dead batteries | Replace all 4 AA batteries. Use USB emergency power if needed. |
| Fingerprint not recognized | Finger wet/dirty, unregistered fingerprint, sensor issue | Ensure finger is clean and dry. Re-enroll fingerprint if necessary. Try another registered finger or unlock method. |
| Keypad not responding | Incorrect code, keypad malfunction | Verify the code. Try re-entering. Check battery level. |
| Auto-lock not working | Feature disabled, incorrect setting | Check auto-lock settings in the app. Ensure the door closes completely. |
| App connectivity issues | Bluetooth off, app not paired, interference | Ensure Bluetooth is enabled on your phone. Re-pair the device in the app. Move closer to the lock. |
| Lock is loose after installation | Screws not tightened | Re-tighten all mounting screws. |
If the problem persists, please contact customer support.
9. Warranty and Support
NBFRUTK is committed to providing high-quality products and excellent customer service.
- Money-Back Guarantee: 30-day money-back guarantee from the date of purchase.
- Product Warranty: 12-month warranty covering manufacturing defects.
- Technical Support: Lifetime technical support for your product.
- Customer Service: Our customer service team is available to respond to inquiries within 24 hours.
For any questions or assistance, please contact us through the platform where you purchased the product or refer to the contact information provided with your purchase.
Image: Two customer service representatives wearing headsets and working on laptops, symbolizing the lifetime service and 24-hour email response provided by NBFRUTK.
