1. Introduction
The YRHAND K7 Biometric Smart Door Lock offers advanced security and convenient access to your home or office. Featuring multiple unlocking methods and smart integration with the Tuya App, this lock provides a modern solution for door access control. This manual will guide you through the installation, operation, and maintenance of your new smart lock.
2. Product Features
- Multiple Unlocking Methods: Unlock using Tuya APP, Fingerprint, Password, Smart Card, or Mechanical Key.
- Tuya App Integration: Remote control, dynamic password generation, temporary password sharing, user management, alarm records, and unlock records.
- Voice System: Supports 8 languages including Chinese, English, Portuguese, Bahasa Indonesia, Russian, Spanish, Arabic, and Vietnamese.
- Long Battery Life: Up to 8+ months of battery life with 4x AAA batteries.
- Emergency Power: Mechanical keys and a USB port for emergency power supply (e.g., power bank) are available if batteries run out.
- Enhanced Security: Virtual password anti-peeping function, multiple anti-test opening alarm, continuous input error automatic locking, and anti-electromagnetic attack technology.
- Silent Mode: Adjustable volume for quiet operation, ensuring minimal disturbance.
- Free Handle Design: Prevents violent unlocking attempts by allowing the handle to move freely when not authorized.
- Universal Design: Suitable for door thicknesses between 35-55mm and reversible for left or right-handed doors.
3. Package Contents
Please check the package to ensure all items are present:
- Front Panel x 1
- Rear Panel x 1
- Mortise Lock x 1 (options available)
- Smart Card x 5 (random color)
- M1 Wristbands x 2
- Mechanical Key x 2
- Screw Kit x 1
- Side Cover x 1
- Strike Plate x 1
4. Specifications
| Attribute | Value |
|---|---|
| Product Name | Indoor Fingerprint Lock |
| Brand Name | YRHAND |
| Model Number | K7 |
| Material | Aluminum Alloy / Zinc Alloy |
| Power Supply | 4 x AAA 1.5V DRY BATTERY (not included) |
| Protection Level | IP66 |
| Fingerprint Capacity | 100 |
| IC Card Capacity | 100 |
| Unlock Modes | Tuya APP / Fingerprint / Password / Smart card / Key |
| Suitable Door Type | Steel Door, Wooden Door, Brass Door, Stainless Steel Door |
| Suitable for Door Thickness | about 35-55mm (some variants support 40-120mm) |
| Handle Direction | Reversible |
| Connectivity | WiFi (Tuya Smart home platform) |
| Operating Temperature | -20 to 55 Centigrade |
| Certification | CE, FCC |
5. Installation
Before installation, ensure your door meets the required specifications for thickness and mortise type. The lock is designed for universal left/right door compatibility.
5.1 Door Measurement
Accurate measurements are crucial for proper installation. Measure the following:
- Door Thickness: Ensure it is within the 35-55mm range (or 40-120mm for some variants).
- Length of Guide Sheet: Measure the existing guide sheet if replacing an old lock.
- Width of Guide Sheet: Measure the existing guide sheet if replacing an old lock.
5.2 Mortise Selection
The lock supports various mortise types. A common option is the Single Latch (70mm). Ensure you select the correct mortise for your door.
5.3 Handle Direction Adjustment
The handle direction is reversible. Adjust it according to your door's opening direction before final installation.
5.4 General Installation Steps
Refer to the detailed installation guide provided with your lock for step-by-step instructions. This typically involves:
- Preparing the door (drilling holes if necessary).
- Installing the mortise lock.
- Attaching the front and rear panels.
- Connecting the wiring.
- Testing the lock's functionality.
6. Operation
6.1 Unlocking Methods
6.1.1 Fingerprint Unlock
Place your registered finger on the semiconductor fingerprint sensor. The lock will unlock quickly. The fingerprint identification area has a groove design for comfortable use.
6.1.2 Password Unlock
Enter your registered password on the touch screen keypad. The lock supports virtual passwords, allowing you to enter random numbers before and after your actual password to prevent others from peeping.
6.1.3 Smart Card Unlock
Present a registered smart IC card to the IC Card Area on the lock. The smart card core is copy-proof and highly secure. Lost cards can be easily deleted and invalidated via the app.
6.1.4 Mechanical Key Unlock
In case of emergency or power failure, use the provided mechanical keys to unlock the door. The keyhole is located at the bottom of the lock.
6.1.5 Tuya App Unlock (Remote & Temporary)
The Tuya App allows for remote unlocking and management.
- Remote Unlock: From the app, click the 'Click open remotely' button. On the lock panel, press "9+#" to confirm the remote opening.
- Dynamic Password: Generate a one-time dynamic password from the app, valid for a short period (e.g., 5 minutes).
- Temporary Password: Send timed-limited or dynamic temporary passwords to guests, family, or service providers.
Video demonstrating various unlocking methods including access card, password, fingerprint, and remote app unlock.
6.2 Security Features
- Anti-Peeping Virtual Password: As described above, use random digits around your actual password.
- Anti-Test Opening Alarm: The system will automatically lock and trigger an alarm after multiple continuous incorrect attempts (password, fingerprint, or card).
- Anti-Electromagnetic Attack: Designed with anti-magnetic and electric field technology to prevent unlocking by devices like Tesla coils.
6.3 Silent Mode
The lock features an adjustable volume, allowing you to set it to silent mode. This is particularly useful for not disturbing sleeping family members.
7. Maintenance
7.1 Battery Replacement
The lock is powered by 4x AAA 1.5V batteries. When the low power reminder activates, replace all four batteries promptly to ensure continuous operation. The battery cover is located on the indoor handle side.
7.2 Emergency Power Supply
If the batteries completely drain before replacement, you can use a mobile power supply (power bank) connected via the USB interface at the bottom of the front panel to temporarily power the lock and gain access. Alternatively, use the mechanical key.
8. Troubleshooting
- Lock Not Responding: Check battery levels. If low, use emergency USB power or mechanical key.
- Fingerprint Not Recognized: Ensure your finger is clean and dry. Re-register fingerprint if issues persist.
- Password Not Working: Double-check the entered password. Utilize the virtual password feature correctly. If multiple incorrect attempts occur, the lock may temporarily disable the keypad.
- App Connectivity Issues: Ensure your home WiFi network is stable and the lock is within range. Restart the app or re-pair the lock if necessary.
- Lock Automatically Locking: This is a security feature. If multiple incorrect attempts are made, the lock will automatically engage its anti-test opening alarm and lock down. Wait for the lockout period to expire.
9. User Tips
- Regularly check the battery status via the Tuya App to avoid being locked out.
- Keep at least one mechanical key in a safe, accessible location outside your home for emergencies.
- When setting up passwords, utilize the virtual password feature to enhance security against shoulder surfing.
- Familiarize yourself with the Tuya App's features, especially remote unlocking and temporary password generation, for maximum convenience.
10. Warranty and Support
The YRHAND K7 Smart Door Lock comes with a 24-month Manufacturer's Limited Warranty, covering defective items (excluding items damaged and/or misused after receipt). For any issues or support, please contact the seller or manufacturer directly with your purchase details.
