1. Introduction
Thank you for choosing the YRHAND O2 Smart Digital Knob Fingerprint Tuya Bluetooth Door Lock. This manual provides detailed instructions for the installation, setup, operation, and maintenance of your new smart lock. Please read this manual thoroughly before installation and keep it for future reference.
The YRHAND O2 smart lock offers multiple unlocking methods including fingerprint, Bluetooth (via Tuya App), mechanical keys, and Wi-Fi (with gateway). It is designed for easy installation and provides enhanced security and convenience for your home or office.
2. Product Overview and Specifications
2.1 Product Features
- Multiple Unlocking Methods: Fingerprint, Tuya App (Bluetooth/Wi-Fi), Mechanical Keys.
- Fast Fingerprint Recognition: Semiconductor Biometric Fingerprint Recognition with 0.5s identification and <0.001% false recognition rate.
- Tuya Smart Integration: Control via Tuya App, remote unlock (with gateway), smart home linkage.
- Auto-Lock Function: Customizable auto-lock delay from 1 second to 30 minutes.
- Emergency Power: USB emergency power outlet for temporary power supply.
- Universal Design: Suitable for both left and right-hand doors.
- Durable Construction: Made from Zinc Alloy.
- Weather Resistance: IP66 Protection Level.
- Voice Prompts: Supports ten languages (Chinese, English, Japanese, Latin, German, Spanish, French, Italian, Russian, Korean).
- Unlock Record: Check unlock logs and alarm logs anytime via the app.
2.2 Product Diagram
Key components: Battery Box, Reset Button, USB Port, Fingerprint Reader, Cylinder Hole.
2.3 Technical Specifications
| Attribute | Value |
|---|---|
| Brand Name | YRHAND |
| Model Number | O2 |
| Power Supply | DRY BATTERY (4x AAA batteries) |
| Protection Level | IP66 |
| Installation Method | Drilling installation |
| Suitable Door Type | Steel Door, Wooden Door, Glass Door, Brass Door, Stainless Steel Door, Other |
| Special Features | Support Gateway (Tuya BLE Mesh Version) |
| Doorknob Function | Biometric, Key & Keypad |
| Connectivity | Bluetooth |
| Ways To Unlock | App, Bluetooth, Mechanical Keys, WIFI (via gateway), FINGERPRINT |
| Material | Zinc Alloy |
| Handle Direction | Direction Reversible (Universal Left and Right door) |
| Certification | CE, FCC |
| Smart Home Platform | Tuya |
3. Installation Guide
3.1 Door Compatibility
The YRHAND O2 smart lock is designed for simple replacement of spherical lock holes and fits on 99% of standard doors. It is compatible with door widths of 55mm to 75mm.
3.2 Mortise Options
The lock supports a 60mm or 70mm adjustable single latch mortise. Please ensure you choose the correct mortise for your door.
3.3 Universal Left and Right Door Installation
The lock is designed to be universal for both left and right-hand doors, making it suitable for various applications such as bedrooms, bathrooms, guest rooms, and offices where privacy is required.
3.4 Installation Steps (General)
- Prepare the door: Ensure the door has a standard spherical lock hole within the 55-75mm width range.
- Install the mortise: Insert the adjustable single latch (60mm or 70mm) into the door edge and secure it with screws.
- Assemble the lock: Follow the detailed instructions provided in the packaging for assembling the inner and outer knob units.
- Connect wiring: Carefully connect any internal wiring as per the diagram (if applicable, typically simple for knob locks).
- Secure the lock: Fasten the lock units to the door using the provided screws.
- Install batteries: Insert 4x AAA dry batteries into the battery box.
- Test functionality: Verify that the mechanical key works and the knob turns freely.
For detailed visual instructions, please refer to the installation video or diagrams included with your product packaging.
4. Setup and Configuration
4.1 Tuya App Setup (Bluetooth)
- Download the Tuya Smart App: Search for "Tuya Smart" in your smartphone's app store (iOS or Android) and install it.
- Register/Login: Create an account or log in to your existing Tuya Smart account.
- Add Device:
- Ensure Bluetooth is enabled on your smartphone.
- Open the Tuya Smart App and tap the "+" icon to add a device.
- Select "Add Manually" or allow the app to scan for nearby devices.
- Choose "Door Lock (Bluetooth)" or a similar category.
- Follow the on-screen prompts to connect the lock. This usually involves pressing a button on the lock (e.g., the reset button) to put it into pairing mode.
- Device Naming: Once connected, you can name your lock for easy identification.
Note: For remote unlocking via Wi-Fi, a Tuya gateway needs to be purchased separately and connected to your home Wi-Fi network. If no gateway is connected, your phone needs to be next to the lock when unlocking via Bluetooth.
4.2 Fingerprint Enrollment
- Access Fingerprint Management: In the Tuya App, navigate to the settings for your smart lock and find the "Fingerprint Management" section.
- Add Fingerprint: Follow the app's instructions to add a new fingerprint. You will typically be asked to place your finger on the fingerprint reader multiple times from different angles to ensure accurate registration.
- Repeat for all authorized users.
4.3 Switching Voice Prompt Language
The smart lock supports ten languages for voice prompts. You can switch the language through the Tuya App settings.
- Open the Tuya App and select your smart lock.
- Go to "Settings" or "Device Settings".
- Look for "Device language" or "Voice Prompts Language".
- Select your desired language from the list (Chinese, English, Japanese, Latin, German, Spanish, French, Italian, Russian, Korean).
- Confirm your selection.
4.4 Smart Home Linkage
The YRHAND O2 lock can be integrated into your Tuya smart home ecosystem, allowing for smart scenarios and automation with other Tuya-compatible devices.
5. Operating Instructions
5.1 Unlocking Methods
- Fingerprint Unlock: Place your registered finger on the fingerprint reader. The lock will unlock in approximately 0.5 seconds.
- App Unlock (Bluetooth): Open the Tuya App, select your lock, and tap the unlock button. Ensure your phone is near the lock.
- App Unlock (Remote via Gateway): If you have a Tuya gateway, you can unlock the door remotely from anywhere with an internet connection via the Tuya App.
- Mechanical Key Unlock: In case of emergency or battery depletion, use the provided mechanical keys. The keyhole is typically hidden for security.
5.2 Auto-Lock Function
The auto-lock function automatically locks the door after a set period. You can configure this in the Tuya App settings.
- Open the Tuya App and select your smart lock.
- Go to "Settings" or "Device Settings".
- Look for "Automatic lock switch" and enable it.
- Set the "auto lock delay time" from 1 second to 30 minutes.
Important: If you turn off the auto-lock feature, the door will not automatically lock when you unlock it. The door knob will function as a regular door knob, allowing you to open the door without fingerprint or app access.
5.3 Emergency Power
If the batteries run out, you can temporarily power the lock using a power bank connected to the USB emergency power outlet located on the exterior knob.
6. Maintenance
6.1 Battery Replacement
The YRHAND O2 smart lock is powered by 4x AAA dry batteries. When the battery level is low, the lock will provide a low battery alarm. Replace all four batteries promptly to ensure continuous operation.
- Locate the battery box on the interior knob.
- Open the battery compartment cover.
- Remove the old AAA batteries.
- Insert new 4x AAA dry batteries, ensuring correct polarity.
- Close the battery compartment cover securely.
6.2 Cleaning
To maintain the appearance and functionality of your smart lock:
- Wipe the lock surface with a soft, dry cloth.
- Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish and electronic components.
- Keep the fingerprint reader clean and free from dirt or moisture for optimal performance.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lock does not respond. | Low battery or dead battery. | Replace batteries. Use USB emergency power if needed. |
| Fingerprint not recognized. | Finger is dirty, wet, or improperly placed. Fingerprint not registered. | Ensure finger is clean and dry. Place finger firmly and completely on the sensor. Re-register fingerprint if necessary. |
| App cannot connect to the lock. | Bluetooth is off. Lock is out of range. App issue. | Ensure Bluetooth is on. Move closer to the lock. Restart the app or phone. Check if a gateway is required for remote access. |
| Auto-lock not working. | Auto-lock function is disabled or delay time is too long. | Check auto-lock settings in the Tuya App and ensure it's enabled with a suitable delay. |
| Mechanical key not working. | Incorrect key or obstruction in keyhole. | Ensure you are using the correct key. Check for any debris in the keyhole. |
If problems persist, please refer to the "Unlock Record" and "Alarm Log" in the Tuya App for more information, or contact customer support.
8. Warranty and Support
8.1 Warranty Information
This YRHAND O2 Smart Digital Knob Fingerprint Tuya Bluetooth Door Lock comes with a standard manufacturer's warranty. Please refer to your purchase documentation for specific warranty terms and duration.
Additionally, AliExpress offers Free Returns within 90 days of purchase. For details, please check the AliExpress platform's return policy.
8.2 Customer Support
For technical assistance, troubleshooting, or warranty claims, please contact the YRHAND Official Store or AliExpress customer service through the platform where you made your purchase.
When contacting support, please provide your product model (O2) and a detailed description of the issue.
