1. Product Overview
The LUCKING DOOR GS312-tuya is an innovative hole-free invisible smart cabinet lock designed for various furniture types. It offers convenient unlocking methods via RFID cards and the Tuya App, providing enhanced security without altering the aesthetic of your furniture.
Key Features:
- Tuya APP Management for remote control and monitoring.
- Unlock Record Query to track access history.
- APP to check battery level for timely maintenance.
- Non-punching installation, preserving furniture integrity.
- RFID card unlocking for quick and easy access.
- Remote unlocking via Bluetooth connection (up to 10 meters).
- Thickened solid stainless steel lock tongue for high security.
- Low energy consumption design for extended battery life.
- Emergency external power supply option for dead battery situations.

2. Package Contents
Before installation, please verify that all components are present:

3. Setup and Installation
This lock is designed for invisible, hole-free installation on wooden doors, drawers, and cabinets. It is suitable for various applications including household drawer cabinets, office data cabinets, cashier drawers, sauna clubs, safe outside door cabinets, and school dormitory lockers.
3.1 Compatibility:
- Applicable Door Type: Wooden doors only.
- Door Thickness: Within 30mm.
- Sensing Penetration: Up to 3CM, suitable for over 99% of drawer cabinets.
3.2 Installation Guidelines:
- Ensure the installation surface is clean and dry.
- The lock is installed on the inside of the cabinet/drawer, making it invisible from the outside.
- For top flat drawer double-layer boards, the lock needs to be embedded inside.
- Can only be installed if the board thickness is above 25mm.
- Cannot be installed in drawer slots or with drawer eaves that obstruct the lock mechanism.




4. Operating Instructions
4.1 RFID Card Unlocking:
To unlock, simply swipe your registered RFID card or keychain over the area where the lock is installed. The lock will mechanically rebound, allowing you to open the drawer or cabinet.

4.2 Tuya App Remote Unlocking:
The lock can be controlled via the Tuya App (Doodle Bluetooth App). Ensure your smartphone is within 10 meters of the lock for Bluetooth connection.
- Download and install the Tuya App on your smartphone.
- Follow the in-app instructions to pair your lock with the app via Bluetooth.
- Once paired, open the mobile app and tap the unlock icon to quickly unlock the cabinet or drawer.
- The app also allows you to query unlock records and check the current battery level.

5. Maintenance
5.1 Battery Replacement:
The lock is powered by 4 AAA batteries (not included). Thanks to its low energy consumption design, the batteries are expected to last 1-2 years. When the battery level drops below 2.4V, a low voltage alarm will activate. Replace the batteries promptly to ensure continuous operation.
- When the low power alarm sounds, open the back cover of the lock.
- Replace the four AAA batteries with new ones.
- Close the back cover securely.

5.2 Emergency Power Supply:
In case the batteries die completely and you cannot unlock the cabinet, the lock supports an emergency external power supply. This requires making small holes for access to the external power port.
6. Troubleshooting
- Lock not responding to RFID card: Ensure the RFID card is correctly registered. Check battery level via the Tuya App or replace batteries if low. Ensure the card is swiped within the sensing range (up to 3CM).
- Lock not responding to Tuya App: Verify Bluetooth is enabled on your phone and the lock. Ensure your phone is within 10 meters of the lock. Check the app for any connection errors or battery status.
- Drawer/Cabinet cannot be opened after unlocking: Check for any physical obstructions preventing the drawer/cabinet from opening. Ensure the lock mechanism is not jammed.
- Lock is completely unresponsive (dead battery): Use the emergency external power supply option to provide temporary power and unlock the cabinet. Then, replace the internal AAA batteries.
- Physical damage to the lock: The warranty does not cover defects caused by misuse. If the lock is physically damaged, it may require replacement.
7. Specifications
| Attribute | Detail |
|---|---|
| Model | GS312-Tuya |
| Material | Stainless steel, ABS plastic |
| Unlocking Methods | Smart IC Proximity Swipe / Tuya APP + Smart IC Proximity Swipe |
| Max. Door Thickness | 30mm |
| Applicable Door Type | Wooden door only |
| Power Supply | 4 x AAA batteries (not included) |
| Battery Life | ≥1.5 years |
| Working Temperature | -30°C to +80°C |
| Relative Humidity | <95RH |
| Antistatic Performance | >15,000V |
| Static Power Consumption | <5μA |
| Dynamic Power Consumption | ~200mA |
| Low Voltage Alarm | <2.4V |
| Emergency Backup Power | Yes (external, requires small holes) |
| Lock Body Dimensions | 7.6 x 7.6 x 2.0 cm (3.0 x 3.0 x 1.0 in) |
| Door Frame Dimensions | 7 x 3.6 x 2.5 cm (2.8 x 1.4 x 1.0 in) |
| Weight | 150g |
| RFID Sensing Penetration | Up to 3CM |
| Bluetooth Range | 10 meters |
| Card Capacity (Basic/Tuya) | 50 / 250 |
| App Name | Doodle Bluetooth (Tuya App) |

8. User Tips
- Remote Access: While the Tuya App allows remote unlocking via Bluetooth, remember that the range is limited to 10 meters. For unlocking when not at home, you would typically need a Tuya Bluetooth gateway/bridge (sold separately) to extend connectivity over Wi-Fi.
- Alexa Integration: This lock primarily uses the Tuya App via Bluetooth. Direct integration with voice assistants like Alexa usually requires a compatible Tuya gateway that supports such integrations. Check the Tuya App for specific smart home integration options.
- iPhone Bluetooth Setup: To set up Bluetooth on your iPhone, ensure Bluetooth is enabled in your phone's settings. Open the Tuya App, and it should guide you through the pairing process for the lock. If issues arise, try restarting both the lock (by briefly removing and reinserting batteries) and your phone's Bluetooth.
- Battery Life: Although the battery life is estimated at 1-2 years, factors like frequent use and extreme temperatures can affect it. Regularly check the battery level via the Tuya App to avoid unexpected lockouts.
9. Warranty and Support
9.1 Warranty:
This product comes with a one-year warranty from the date of original purchase. The warranty covers manufacturing defects but does not cover defects caused by misuse, fire, or other user-induced damage.
9.2 Support:
If you have any questions or require assistance, please contact our customer support via Trade Manager. All messages will be answered within 24 hours, Monday to Saturday.