Introduction
The Tuya WiFi Smart Thermostat (Model K6H) is designed for indoor temperature control in household floor water heating systems or heating systems such as boilers. It offers advanced smart features, including multi-voice platform control and remote management via a smartphone application, making it suitable for various regions including Asia, Europe, and the United States. Its elegant design and energy-saving capabilities enhance home comfort and efficiency.
Key Features:
- Multi-voice platform control: Compatible with Alexa, Google Home, Homekit, Rokid, IFTTT, Mi Home, Tuya, and Tmall Wizard.
- Remote control via Cubee Smart / Tuya Smart Life app for Android and iOS devices.
- Elegant piano key surface design with touch buttons.
- Customized special enhanced protection terminal.
- Potential energy cost savings of up to 23% annually on heating or cooling.
- Child Lock safety protection to prevent unintended operation.
- Frost protection feature.

Figure 1: Tuya WiFi Smart Thermostat with mobile app control interface. Shows the thermostat's display and a smartphone displaying the Tuya Smart Life app for remote control.
Specifications
| Attribute | Value |
|---|---|
| Model Number | K6H |
| Brand Name | EARUELETRIC |
| Type | Floor Heating Systems |
| Material | Anti-flammable PC + ABS |
| Power Supply | AC95-240V, 50/60Hz |
| Current Load | 16A/3A |
| Sensor | NTC 10kB 25/50:3950K |
| Accuracy | ±1℃ |
| Set Temperature Range | 5-60℃ (Adjustable) |
| Self Consumption Power | <1W |
| Screen | LCD |
| Buttons | Touch |
| Compatibility | All Compatible (Android / iOS) |
| Mobile APP | Tuya Smart Life |
| Dimension | 86*86*40mm |
| Color | Black |
| Origin | Mainland China |
| Certification | CE |
Setup and Installation
The installation process is designed to be convenient, requiring just a few simple steps. Please ensure power is disconnected before beginning installation.
Installation Steps:
- Prepare the Wall: Install expansion screw cartridges on the wall with a spacing of 60mm.
- Separate Covers and Wire: Use a screwdriver to carefully separate the upper and lower covers of the thermostat. Following the wiring direction, thread the necessary wires through the back cover to the wire slot. Leave approximately 20CM of wire length for easy connection.
- Mount the Bottom Shell: Fix the bottom shell securely to the wall using screws.
- Connect Wires and Attach Front Shell: Connect the wires as per the wiring diagram (refer to Figure 2). Once wiring is complete, align and buckle the front shell onto the bottom shell at a 30-degree angle, ensuring it clicks into place.

Figure 2: Product display and installation steps for Tuya WiFi Smart Thermostat. This image provides visual details of the thermostat's front, side, back, packaging, and a step-by-step guide for physical installation, including a wiring diagram.
Wiring Diagram:
Refer to the detailed wiring diagram provided on the back of the thermostat or in the installation image (Figure 2) for correct electrical connections. Ensure all connections are secure and comply with local electrical codes.

Figure 3: Back view of Tuya WiFi Smart Thermostat showing wiring terminals. This image provides a clearer view of the wiring connections on the back of the thermostat.
App Pairing:
To pair your thermostat with the Tuya Smart Life app:
- Download the "Tuya Smart Life" app from your smartphone's app store (Android or iOS).
- Register or log in to your account.
- Ensure your thermostat is powered on and in pairing mode (usually indicated by a flashing Wi-Fi icon).
- In the app, tap "Add Device" and follow the on-screen instructions to discover and connect your thermostat to your home Wi-Fi network.
Video 1: Tuya Smart Thermostat App Control and Settings. This video demonstrates the Tuya Smart Thermostat's app control and various settings like temperature adjustment, frost protection, child lock, and weekly programming.
Operating Instructions
Manual Control:
The thermostat features an LED comprehensive screen with responsive touch buttons for direct control. You can adjust the temperature, switch modes, and access basic settings directly from the device.

Figure 4: Close-up of Tuya WiFi Smart Thermostat's LED touch screen and buttons. Emphasizes the large, responsive touch screen and buttons for easy operation.
App Control:
Use the Tuya Smart Life app to remotely control your thermostat from anywhere. The app allows you to:
- Adjust target temperature.
- Switch between manual and auto modes.
- Set weekly programming schedules (e.g., 5+2, 6+1, or 7-day schedules).
- Configure advanced settings like temperature correction, temperature limits, sensor selection (internal/external), backlight brightness, frost protection, and child lock.

Figure 5: Tuya WiFi Smart Thermostat being controlled via a smartphone app. Illustrates the remote control capabilities through the dedicated mobile application.
Voice Control:
The thermostat supports integration with various voice assistants. Once connected to your smart home ecosystem (e.g., Alexa, Google Home), you can use voice commands to adjust the temperature or change modes.

Figure 6: Tuya WiFi Smart Thermostat compatible with multiple smart home platforms. Shows the thermostat's compatibility with popular voice control and smart home ecosystems.
Child Lock:
Activate the Child Lock feature via the app settings to prevent unauthorized or accidental changes to the thermostat settings, especially useful in households with children.

Figure 7: Child lock safety protection. Illustrates the child lock function designed to prevent accidental adjustments by children.
Maintenance
To ensure optimal performance and longevity of your thermostat:
- Cleaning: Gently wipe the screen and body with a soft, dry cloth. Avoid using abrasive cleaners or solvents, as these can damage the surface.
- Software Updates: Regularly check the Tuya Smart Life app for any available firmware updates for your thermostat. Keeping the software updated ensures you have the latest features and security enhancements.
- Power Cycle: If the thermostat becomes unresponsive, try power cycling it by turning off the main power supply to the heating system for a few minutes, then turning it back on.
Troubleshooting
If you encounter issues with your thermostat, consider the following common solutions:
- No Power/Display Off: Check the main power supply to your heating system and ensure the thermostat is correctly wired.
- Wi-Fi Disconnection: Ensure your home Wi-Fi network is active and the signal strength is adequate. Try restarting your router. If the issue persists, attempt to re-pair the thermostat with the app.
- Incorrect Temperature Readings: Verify the sensor selection in the app settings (IN for internal sensor, OUT for external sensor if applicable). You can also use the "Temperature Correction" setting in the app to fine-tune the temperature reading if there's a consistent offset.
- Heating/Cooling Not Activating: Check the thermostat's mode (manual/auto) and target temperature settings. Ensure the heating system itself is functioning correctly.
- Child Lock Engaged: If you cannot change settings, check if the Child Lock feature is enabled in the app and disable it if necessary.
- Unresponsive Touch Screen: A power cycle (turning off and on the main power) can often resolve temporary unresponsiveness.
User Tips
- Optimize Energy Savings: Utilize the weekly programming feature to set different temperatures for various times of the day and week, aligning with your schedule to maximize energy efficiency.
- Remote Monitoring: Take advantage of the Tuya Smart Life app to monitor and adjust your home's temperature even when you're away, ensuring comfort upon your return and preventing unnecessary heating/cooling.
- Voice Command Convenience: Integrate your thermostat with a voice assistant for hands-free temperature adjustments, adding convenience to your smart home setup.
- Child Safety: Always enable the Child Lock feature if you have young children to prevent them from accidentally changing your heating settings.
- Origin: This product is manufactured in Mainland China.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.