1. Introduzione
This manual provides comprehensive instructions for the installation, operation, and maintenance of your AVATTO Smart Wi-Fi Thermostat, Model WT400S-3A-B. This thermostat is designed to regulate room temperature for electric floor heating systems, offering advanced features such as programmability, remote control via smartphone applications, and voice control compatibility with smart home assistants.
2. Prodotto finitoview
2.1 Caratteristiche principali
- Connettività Wi-Fi intelligente: Control your thermostat remotely via the 'Smart Life' or 'Tuya Smart' application on your smartphone.
- Controllo vocale: Compatibile con Amazon Alexa e Google Home per un comodo utilizzo a mani libere.
- Modalità programmabili: Supporta la modalità manuale e programmi programmabili (opzioni 5+2, 6+1 o 7 giorni) con più impostazioni di temperatura al giorno.
- Calibrazione della temperatura: Adjust temperature readings for accuracy if there is a discrepancy between the thermostat and actual room temperature.
- Luminosità dello schermo regolabile: Three levels of brightness to choose from, ensuring comfort and preventing disturbance during sleep.
- Sensori di temperatura NTC: Integrated sensors provide precise temperature regulation for a comfortable heating environment.
- Caratteristiche di sicurezza: Includes child lock, power-off memory, and antifreeze protection.
- Ampio intervallo di temperatura: Operates within 5°C to 70°C with a temperature accuracy of ±0.5°C.
2.2 Contenuto della confezione
- 1 x AVATTO Smart Wi-Fi Thermostat
- 2 viti di montaggio
- 1 x Manuale utente (inglese e tedesco)
2.3 Thermostat Display Elements

Immagine: Labeled display elements of the AVATTO Smart Wi-Fi Thermostat. This image illustrates the various indicators and controls on the thermostat's screen, including Wi-Fi status, current time, room temperature, manual/automatic mode, temperature adjustment buttons, and the power button.
- Icona Wi-Fi: Indica lo stato della connessione Wi-Fi.
- Week/Day Indicator: Mostra il giorno corrente della settimana.
- Tempo: Visualizza l'ora corrente.
- Temperatura ambiente: Shows the detected room temperature.
- IMPOSTATO: Indicates the target temperature setting.
- Modalità manuale/automatica: Icon to switch between manual and programmed operating modes.
- Pulsante di accensione: Turns the thermostat on or off. Press and hold for 5-10 seconds to activate Wi-Fi pairing mode.
- Pulsanti di regolazione della temperatura (+/-): Aumenta o diminuisce l'impostazione della temperatura.
3. Impostazione
3.1 Installazione e cablaggio
The AVATTO Smart Wi-Fi Thermostat is designed for electric floor heating systems. Ensure that the power supply is disconnected before beginning installation to prevent electrical shock.
- Prepare a suitable wall mounting box (dimensions provided in the diagram).
- Connect the thermostat wiring according to the diagram below. This thermostat is compatible with 110-240V electric actuators.
- Secure the thermostat to the wall mounting box using the provided screws.

Immagine: Dimensions and wiring connections for the AVATTO Smart Wi-Fi Thermostat. The diagram shows the physical dimensions of the thermostat (86mm x 86mm x 26mm) and the wiring terminal block with labels for N (Neutral), L (Live), NC (Normally Closed), and NO (Normally Open) connections for the heating system, along with sensor connections.
3.2 Connessione all'app (Smart Life / Tuya Smart)
To enable remote control and smart features, connect your thermostat to the 'Smart Life' or 'Tuya Smart' application.
- Scarica l'app 'Smart Life' o 'Tuya Smart' dall'app store del tuo smartphone.
- Registrati o accedi al tuo account.
- Ensure your thermostat is powered on. Press and hold the power button on the thermostat for 5-10 seconds until the Wi-Fi icon flashes, indicating pairing mode.
- Nell'app, tocca "+" per aggiungere un nuovo dispositivo. Seleziona "Termostato" o "Riscaldatore" dall'elenco dei dispositivi.
- Follow the on-screen instructions to connect the thermostat to your 2.4GHz Wi-Fi network. 5GHz networks are not supported.

Immagine: The AVATTO Smart Thermostat being controlled remotely through a smartphone application. The image highlights the convenience of managing heating settings from anywhere using the AVATTO or Smart Life app.
4. Istruzioni per l'uso
4.1 Accensione/spegnimento
Press the power button once to turn the thermostat on or off.
4.2 Impostazione della temperatura
In manual mode, use the '+' and '-' buttons on the thermostat or the app to adjust the desired temperature. The minimum temperature setting is 0.5°C.

Immagine: Precise temperature control features of the AVATTO Smart Thermostat. This image details the minimum temperature setting (0.5°C), temperature hysteresis (0.5°C to 10°C), and upper and lower temperature limits (15°C to 95°C).
4.3 Operating Modes (Manual / Program)
Il termostato supporta due modalità di funzionamento principali:
- Modalità manuale: Il termostato mantiene costante la temperatura impostata dall'utente finché non viene modificata manualmente.
- Modalità di programmazione: Allows you to set a customized heating schedule for different times of the day and week. You can choose between 5+2 (weekdays/weekend), 6+1 (Mon-Sat/Sun), or 7-day programming options. Refer to the app for detailed schedule setup.
4.4 Controllo vocale
Once connected to the Smart Life app and linked with Amazon Alexa or Google Home, you can control your thermostat using voice commands.
- Example Comandi:
- "Alexa, imposta il termostato a 23 gradi."
- "Hey Google, turn on the living room thermostat."
- "Alexa, what is the temperature in the bedroom?"

Immagine: Voice control functionality of the AVATTO Smart Thermostat with Amazon Alexa and Google Home devices. A smartphone displays the AVATTO app interface, while an Alexa Echo Dot and Google Home Mini are shown, illustrating hands-free temperature adjustment.
4.5 Calibrazione della temperatura
If you notice a difference between the actual room temperature and the temperature displayed on the thermostat, you can calibrate it through the app settings. This ensures accurate temperature readings and control.
4.6 Regolazione della luminosità dello schermo
The screen brightness can be adjusted to three levels via the app settings to suit your preference and avoid disturbance, especially during nighttime.

Immagine: Adjustable screen brightness levels of the AVATTO Smart Thermostat. The image displays the thermostat screen at 0%, 20%, 50%, and 100% brightness, along with a screenshot of the app interface showing the 'Backlight brightness' slider.
4.7 Funzione blocco bambini
Activate the child lock feature through the app to prevent unauthorized changes to the thermostat settings by children.
4.8 Antifreeze Protection
The thermostat includes an antifreeze function to prevent pipes from freezing in cold conditions by automatically activating heating if the temperature drops below a set threshold.
5. Manutenzione
To ensure optimal performance and longevity of your AVATTO Smart Wi-Fi Thermostat, follow these maintenance guidelines:
- Pulizia: Pulire delicatamente lo schermo e il corpo del termostato con un panno morbido e asciutto. Evitare l'uso di detergenti abrasivi, solventi o spray chimici, poiché potrebbero danneggiare il dispositivo.
- Cura del sensore: Ensure the temperature sensors are not obstructed by furniture, curtains, or other objects, as this can affect temperature readings.
- Aggiornamenti software: Periodically check the 'Smart Life' or 'Tuya Smart' app for any available firmware updates for your thermostat to ensure you have the latest features and bug fixes.
6. Risoluzione Dei Problemi
If you encounter issues with your AVATTO Smart Wi-Fi Thermostat, refer to the following common problems and solutions:
- Il termostato non si accende:
- Controllare l'alimentazione elettrica principale del sistema di riscaldamento.
- Verify that the wiring connections are secure and correct according to the installation diagram.
- Problemi di connessione Wi-Fi:
- Ensure your Wi-Fi router is operating on a 2.4GHz frequency. The thermostat does not support 5GHz Wi-Fi.
- Confirm that the thermostat is within range of your Wi-Fi router.
- Restart your Wi-Fi router and attempt the pairing process again.
- Make sure the Wi-Fi icon on the thermostat is flashing during pairing mode (press and hold power button for 5-10 seconds).
- Letture di temperatura errate:
- Use the temperature calibration function in the app to adjust the reading.
- Ensure the thermostat's internal sensor is not obstructed or exposed to direct heat sources (e.g., sunlight, appliances).
- Heating not turning on/off as scheduled:
- Verify that the thermostat is in 'Programming Mode' and that your schedule is correctly set in the app.
- Check the current time and day settings on the thermostat and in the app.
- Ensure the child lock is not activated if you are unable to make changes.
- Il controllo vocale non funziona:
- Confirm that your thermostat is successfully linked to Amazon Alexa or Google Home through the Smart Life app.
- Controlla la tua connessione Internet e lo stato del tuo smart speaker.
- Utilizzare comandi vocali chiari e precisi.
7. Specifiche
| Marca | AVATTO |
| Numero di modello | WT400S-3A-B |
| Colore | Nero |
| Dimensioni (L x P x A) | 86 x 86 x 26 mm (0.8 x 9 x 6 cm product dimensions listed, 26mm depth from image) |
| Peso | 200 grammi |
| Energia | 1200 Watt |
| Voltage | 100-240 V CA, 50/60 Hz |
| Attuale | 3 A |
| Materiale | Plastica |
| Tecnologia di connettività | Wi-Fi (solo 2.4 GHz) |
| Intervallo di temperatura | Temperatura ambiente: da 5°C a 70°C |
| Precisione della temperatura | ± 0.5°C |
| Usi specifici | For floor heating and gas boiler (this model is 3A, typically for electric floor heating) |
8. Garanzia e supporto
For any issues not covered in this manual, or if you require further assistance with installation or connection, please contact AVATTO customer support. Refer to the product packaging or the AVATTO websito per informazioni specifiche sulla garanzia e dettagli di contatto.





