Smart thermostat Avatto WT100 Wi‑Fi 3A for water heater, Wi‑Fi control, 3 A output

Avatto WT100 smart thermostat for water heaters with Wi‑Fi and 3 A output. The WT100 is designed to control water heating systems in homes and small offices, providing precise temperature regulation via an NTC sensor with 1°C accuracy. It switches the heater actuator on or off and connects to Wi‑Fi for remote control through Tuya or Smart Life platforms and is compatible with voice assistants such as Amazon Alexa, Google Assistant and Yandex Alice.

Advantages

The thermostat offers programmable weekly schedules (5+2, 6+1 or 7 days) with up to 6 time periods per day, manual and automatic operation modes, and a built‑in LCD that shows current mode, set temperature, network status and time. It supports touchscreen control, app control, and voice control. Additional features include a child lock, grouping of multiple devices and the ability to share access with other household members.

Suitable for

• Domestic electric water heaters
• Small office water heating systems
• Simple on/off actuator control for hot water supply
• Remote scheduling and temperature management via smartphone or voice assistant

Key specifications

• Manufacturer: Avatto
• Model: WT100-WH-3A
• Voltage: AC 95–220 V, 50/60 Hz
• Maximum load: 3 A
• Sensor: NTC, accuracy 1°C
• Temperature control range: 5°C–60°C
• Displayed temperature range: 0°C–51°C
• Operating temperature: -5°C–50°C
• Display: LCD (adjustable brightness)
• Power consumption: <1 W
• Dimensions: 86 x 86 x 40 mm
• Connectivity: Wi‑Fi; platforms: Tuya, Smart Life
• Voice assistants: Amazon Alexa, Google Home, Yandex Alice

How to use

Mount the thermostat in place of the existing controller and connect it to the electric actuator or heater following the included wiring instructions. Power the device from AC 95–220 V. Configure Wi‑Fi and link the device in the Tuya or Smart Life app on your smartphone to set schedules, temperature setpoints and operating modes. You can also control the thermostat via its touchscreen or by voice commands after enabling the chosen voice assistant integration.

Usage recommendations

For reliable operation, install the thermostat in a dry, well‑ventilated location away from direct heat sources. Use the app schedules to optimise energy consumption and enable the child lock if the device is accessible to children. Do not exceed the 3 A maximum load rating; for higher power heaters use an appropriate external relay or contactor.