1. Introduction
This manual provides detailed instructions for the installation, setup, operation, and maintenance of your KUCACCI Wifi Smart Door Lock with Handle. This smart lock offers multiple access methods, including fingerprint, touchpad passcode, mobile application, key fob, and traditional key, along with compatibility for voice control via Alexa and Google Assistant. Please read this manual thoroughly before installation and use to ensure proper function and security.

Image 1.1: Overview of the KUCACCI Smart Door Lock system, including the lock unit, a wireless gateway, and two key fobs.
2. Product Features
- Multiple Access Options: Unlock using fingerprint, touchpad passcode, NICE DIGI mobile app (via Bluetooth or Wi-Fi with gateway), key fob, or traditional physical key.
- Easy DIY Installation: Designed for quick replacement of existing door handlesets, levers, knobs, or deadbolts with minimal tools.
- Remote Control: With the included Tuya Gateway, control and monitor your lock remotely from anywhere via the NICE DIGI app.
- Biometric Fingerprint Sensor: Fast 0.3-second fingerprint recognition for convenient access.
- Electronic Touch Keypad: Supports 6-9 digit passcodes with anti-peeping functionality.
- Automatic Locking: The door automatically locks after closing for enhanced security.
- Voice Control Compatibility: Integrate with Amazon Alexa and Google Assistant for voice-activated unlocking.
- Access Log: View real-time access logs through the mobile application.
- Property Management: Efficiently manage multiple smart locks and share temporary or permanent access with others via the app.

Image 2.1: Visual representation of the various unlocking methods available for the smart door lock.
3. Package Contents
Verify that all components are present before beginning installation:
- KUCACCI Smart Door Lock with Handle (Exterior and Interior Units)
- Tuya Gateway
- Mounting Hardware (screws, bolts, strike plate)
- Physical Keys (2-3)
- Key Fobs (2)
- User Manual (this document)
4. Specifications
| Feature | Detail |
|---|---|
| Brand | KUCACCI |
| Model Number | 73a00d59-fbd2-4755-a356-81125194d060 |
| Lock Type | Biometric, Keypad |
| Material | Stainless Steel |
| Special Features | Auto-Lock, Fingerprint, Keyless Entry |
| Controller Type | Amazon Alexa, Google Assistant |
| Connectivity Protocol | Bluetooth, Wi-Fi (via Gateway) |
| Recommended Use | Residential use, keyless entry, home security, property management, smart home integration |
5. Installation
The KUCACCI Smart Door Lock is designed for easy DIY installation, typically requiring only a screwdriver. It is compatible with most standard American front doors, exterior doors, and interior doors, replacing existing handlesets, levers, knobs, or deadbolts.
5.1. Compatibility Check
Ensure your door meets the following criteria:
- Door thickness: Typically 1-3/8" to 2" (35mm to 50mm).
- Backset: 2-3/8" or 2-3/4" (60mm or 70mm).
- Cross bore hole diameter: 2-1/8" (54mm).
- Edge bore hole diameter: 1" (25mm).

Image 5.1: Examples of door lock types compatible with the KUCACCI Smart Door Lock.
5.2. Installation Steps
- Remove Existing Lock: Use a screwdriver to remove your current door lock and handle.
- Install Latch and Strike Plate: Insert the new latch into the door edge and secure the strike plate to the door frame.
- Install Exterior Assembly: Place the exterior smart lock unit onto the door, ensuring the spindle passes through the latch.
- Install Interior Mounting Plate: Secure the interior mounting plate to the exterior unit using screws.
- Connect Cables: Connect the cable from the exterior unit to the interior unit.
- Install Interior Assembly: Attach the interior smart lock unit to the mounting plate.
- Insert Batteries: Open the battery cover on the interior unit and insert 4 AA batteries (not included).
- Test Operation: Manually test the handle and latch to ensure smooth operation.
The handle is reversible and can be adjusted for left or right-handed doors during installation.

Image 5.2: Visual guide for the DIY installation process and handle orientation.
6. Setup
6.1. NICE DIGI App Installation and Pairing
- Download App: Search for "NICE DIGI" in your smartphone's app store (iOS or Android) and install it.
- Create Account: Open the app and register a new account or log in if you already have one.
- Add Device (Bluetooth): Ensure Bluetooth is enabled on your phone. In the app, tap "Add Device" or the "+" icon. The app will search for nearby Bluetooth devices. Select your KUCACCI Smart Door Lock.
- Pair Gateway (Wi-Fi): To enable remote control and voice assistant integration, plug in the Tuya Gateway near your door lock and within range of your 2.4GHz Wi-Fi network. In the NICE DIGI app, add the gateway as a new device and follow the on-screen instructions to connect it to your Wi-Fi network. Once the gateway is paired, link your smart lock to the gateway within the app.

Image 6.1: The NICE DIGI app interface for adding and linking smart home devices.
6.2. Adding Fingerprints
- In the NICE DIGI app, navigate to your smart lock's settings.
- Select "Fingerprint Management" or a similar option.
- Follow the app's instructions to register a new fingerprint. You will typically be asked to place your finger on the sensor multiple times from different angles until it is fully registered.

Image 6.2: The fingerprint sensor on the smart door lock.
6.3. Setting Passcodes
- From the app, go to "Passcode Management".
- Choose to create a permanent, temporary, or scheduled passcode.
- Enter your desired 6-9 digit passcode. The lock supports anti-peeping, allowing you to enter random digits before or after your actual code to obscure it.
- Confirm the passcode.
6.4. Adding Key Fobs (IC Cards)
- In the app, navigate to "Card Management" or "Key Fob Management".
- Select "Add Card" and follow the prompts.
- Present the key fob to the designated area on the lock's keypad when instructed by the app.
6.5. Voice Assistant Integration (Alexa/Google Assistant)
- Ensure your Tuya Gateway is successfully paired with the NICE DIGI app and connected to Wi-Fi.
- Open your Amazon Alexa or Google Home app.
- Enable the "Smart Life" or "Tuya Smart" skill/service (NICE DIGI often integrates through these platforms).
- Link your NICE DIGI account to the voice assistant app.
- Discover devices. Your KUCACCI Smart Door Lock should appear.
- You can now use voice commands like "Alexa, unlock the front door" (you may need to set up a voice code for unlocking for security).
7. Operating Instructions
7.1. Unlocking the Door
- Fingerprint: Place your registered finger on the fingerprint sensor. The lock will unlock if recognized.
- Passcode: Enter your 6-9 digit passcode on the keypad, followed by the '#' or checkmark button.
- Key Fob: Present the registered key fob to the keypad area.
- NICE DIGI App: Open the app, select your lock, and tap the unlock icon.
- Physical Key: Insert the physical key into the keyhole and turn to unlock.
- Voice Command: Use a voice command (e.g., "Alexa, unlock the front door") after setting up voice assistant integration.
7.2. Locking the Door
- Automatic Locking: The lock will automatically engage after a set period (configurable in the app) once the door is closed.
- Manual Locking (Keypad): Press and hold the '#' or lock button on the keypad.
- NICE DIGI App: Open the app, select your lock, and tap the lock icon.
7.3. Remote Control and Access Logs
With the Tuya Gateway connected, you can remotely lock/unlock your door and view access history from anywhere using the NICE DIGI app.

Image 7.1: Illustration of remote unlocking via the mobile app.

Image 7.2: The access log feature within the NICE DIGI app.
8. Maintenance
- Battery Replacement: The lock requires 4 AA batteries. Replace them when the low battery indicator appears on the lock or in the app. Use high-quality alkaline batteries for optimal performance.
- Cleaning: Wipe the lock's exterior surfaces with a soft, dry cloth. Avoid abrasive cleaners or solvents that could damage the finish or electronic components.
- Firmware Updates: Periodically check the NICE DIGI app for available firmware updates for your lock and gateway to ensure optimal performance and security.
- Physical Key Maintenance: Keep physical keys in a safe, accessible location as a backup.
9. Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Lock not responding to input | Low batteries, incorrect input, lock malfunction. | Replace batteries. Re-enter code/fingerprint carefully. Use physical key if necessary. Contact support if issue persists. |
| Fingerprint not recognized | Finger wet/dirty, sensor dirty, fingerprint not properly registered. | Ensure finger and sensor are clean and dry. Try different angles. Re-register fingerprint in the app. |
| Remote control not working | Tuya Gateway offline, Wi-Fi issue, app not connected. | Check gateway power and Wi-Fi connection. Ensure phone has internet access. Restart app and gateway. Confirm gateway is linked to the lock in the app. |
| Alexa/Google Assistant not responding | Gateway offline, skill not enabled, incorrect voice command. | Verify gateway connection. Ensure "Smart Life" or "Tuya Smart" skill is enabled and linked. Use precise voice commands. |
| Door does not auto-lock | Auto-lock feature disabled, door not fully closed. | Check auto-lock settings in the NICE DIGI app. Ensure the door is completely closed and aligned with the strike plate. |
10. Warranty and Support
KUCACCI is committed to providing reliable products and customer satisfaction.
- App Access: Lifetime free access to the NICE DIGI mobile application.
- Money-Back Guarantee: 30-day money-back guarantee from the date of purchase.
- Product Warranty: 1-year limited product warranty covering manufacturing defects.
- After-Sales Support: Lifetime technical support for your KUCACCI Smart Door Lock.
For technical assistance, warranty claims, or further inquiries, please contact KUCACCI customer support through the contact information provided on your purchase receipt or the official KUCACCI website.




