Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your new WiFi Tuya Smart Thermostat. Please read this manual thoroughly before installation and use to ensure proper function and safety.
Safety Information
- Always disconnect power at the circuit breaker before installing or servicing the thermostat.
- Installation should be performed by a qualified electrician.
- Ensure all wiring complies with local electrical codes.
- Do not operate the thermostat with wet hands.
- Keep the device away from water and high humidity.
- This device is designed for household use.
Package Contents
Verify that all items are present in your package:

Figure 1: Package Contents and Thermostat Color Options
The packing list varies slightly depending on the model (Electric heating 16A, Boiler heating 3A, or Plumbing 3A). Generally, it includes:
- Thermostat unit
- Packing box
- Instruction Manual
- Screws (x2)
- External sensor (3m) (for Electric heating 16A model only)
Specifications
| Feature | Detail |
|---|---|
| Type | Wi-Fi Smart Thermostat |
| Display | Touch Color Display |
| Material | Anti-flammable PC |
| Voltage | 110-250V AC, 50/60HZ |
| Max. Current Load | 16A (Electric Heating) / 3A (Water Heating/Gas Boiler) |
| Temperature Accuracy | 1℃ |
| Temperature Setting Range | 5-95℃ |
| Ambient Temperature | -5 ~ 50℃ |
| Sensor | Built-in sensor and floor sensor (external for 16A electric heating) |
| APP | Tuya Smart Life |
| Voice Control | Yandex Alice, Amazon Alexa, Google Home |
| Is Smart Device | Yes |
| Certification | CE |
| Wattage | 2W |

Figure 2: Product Parameters and Dimensions (86mm x 86mm x 42mm, 15mm depth)
Screen elements include: Week, Time, Heating status, Leave mode, Room temperature, Hold mode, Floor temperature, Power button, Antifreeze icon, Wifi icon, Lock key, Up arrow, Temperature setting, Down arrow, Mode switch, Keep time.
Setup
1. Installation Location
Choose a location on an interior wall, away from direct sunlight, drafts, or heat sources that could affect temperature readings.
2. Wiring Diagrams
WARNING: Disconnect power at the circuit breaker before proceeding with any wiring. Improper wiring can cause damage to the thermostat or heating system and may pose a fire hazard.
Electric Heating Thermostat (16A) Wiring

Figure 3: Electric Heating Thermostat 16A Wiring Diagram
Connect the Neutral wire (N) to terminal 1, Live wire (L) to terminal 2. Connect the Load wires (N1, L1) to terminals 3 and 4 respectively. The external floor sensor (β=3950, R25℃=10KΩ) connects to terminals 1 and 2 (K1, K2) on the side of the thermostat.
Boiler Heating / Plumbing Thermostat (3A) Wiring

Figure 4: Boiler Heating / Plumbing Thermostat 3A Wiring Diagram (NC and NO Types)
For both NC (Normally Closed) and NO (Normally Open) types, connect the Neutral wire (N) to terminal 1 and Live wire (L) to terminal 2. For NC type, connect K1 and K2 to terminals 3 and 4 (NC, NO). For NO type, connect K1 and K2 to terminals 3 and 4 (NC, NO). Consult your boiler/plumbing system manual for specific NC/NO requirements.
3. Mounting the Thermostat
- After wiring, carefully push the wires into the wall box.
- Secure the thermostat to the wall box using the provided screws.
- Attach the front panel of the thermostat to the base unit.
4. Initial Power-On and Wi-Fi Connection
- Restore power at the circuit breaker. The thermostat display should light up.
- Download the "Smart Life" app from your smartphone's app store.
- Register or log in to your Smart Life account.
- Follow the in-app instructions to add your new thermostat. This typically involves putting the thermostat into pairing mode (refer to the on-screen instructions or the full manual for specific button presses).
- Once connected, you can control the thermostat remotely via the app.
Operating Instructions
1. LCD Touch Display Overview

Figure 5: Thermostat Front Display
The 3.5-inch color touch screen allows for intuitive control. Refer to Figure 2 for a detailed breakdown of screen elements.
2. Basic Temperature Control
- Setting Temperature: Use the Up/Down arrows on the screen to adjust the desired temperature.
- Power On/Off: Press the power button (usually at the bottom center) to turn the thermostat on or off.
3. Manual / Auto Mode
Switch between manual control (set temperature directly) and auto mode (follows programmed schedule) as needed. The specific icon for mode switching is shown in Figure 2.
4. Weekly Programmable Schedule
The thermostat supports different temperature settings with 6 time-modes daily. This allows you to customize your heating schedule for energy efficiency and comfort. Detailed programming instructions are typically found within the "Smart Life" app or the thermostat's advanced settings menu.
5. Holiday Mode
Activate Holiday Mode to save energy when you are away. This mode automatically maintains a lower temperature until your specified return date.

Figure 6: Setting Holiday Mode
6. Celsius and Fahrenheit Display
You can switch between Celsius (℃) and Fahrenheit (℉) temperature display modes in the settings.

Figure 7: Celsius and Fahrenheit Display Options
7. Children Lock
The keypad locking function prevents accidental changes to settings, ideal for households with children. Activate this feature in the thermostat's settings menu.
8. Multiple Languages
The thermostat supports 9 system languages, including Chinese, English, Italian, Russian, French, Polish, Spanish, German, and Czech. You can select your preferred language in the settings.

Figure 8: System Language Selection
9. Smart Life App Control
Control your thermostat remotely from anywhere using the Smart Life app. This includes adjusting temperature, changing modes, setting schedules, and activating holiday mode.

Figure 9: Smart Life App Interface
10. Voice Control Integration
The thermostat is compatible with Yandex Alice, Amazon Alexa, and Google Home. Link your Smart Life account to your preferred voice assistant app to control your heating with voice commands.

Figure 10: Voice Control with Smart Assistants
Maintenance
- Clean the thermostat screen and casing with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Ensure the area around the thermostat is free from obstructions to allow for accurate temperature sensing.
- Periodically check the wiring connections to ensure they are secure.
Troubleshooting
- Thermostat not powering on: Check the circuit breaker and ensure all wiring connections are secure.
- No Wi-Fi connection: Ensure your home Wi-Fi network is active and the thermostat is within range. Re-attempt the pairing process in the Smart Life app.
- Inaccurate temperature readings: Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources.
- App control not working: Verify your phone has an internet connection and the Smart Life app is updated to the latest version.
- Voice control not responding: Ensure your Smart Life account is correctly linked to your voice assistant (Alexa/Google Home) and the thermostat is online.
User Tips
- Utilize the weekly programming feature to optimize energy savings and comfort by setting different temperatures for various times of the day and week.
- Take advantage of Holiday Mode when away for extended periods to prevent unnecessary heating.
- For optimal performance of app and voice control, ensure your home Wi-Fi network is stable and has good coverage where the thermostat is installed.
- If you have the 16A Electric Heating model, ensure the external floor sensor is correctly installed for accurate floor temperature readings.
Warranty and Support
For warranty information and technical support, please refer to the seller's contact information or the official product website. Keep your purchase receipt as proof of purchase.