Smart thermostat Avatto ZWT100 Zigbee 3A Tuya — thermostat controller with Zigbee connectivity, 3A output

Avatto ZWT100 smart thermostat for DHW boilers with Zigbee and Tuya compatibility, model ZWT100-BH-3A. This thermostat controller provides direct on/off control of boiler power to supply hot water for space heating. It uses an NTC sensor for temperature accuracy to 1°C, features an LCD display and a Zigbee 3.0 module for integration with Tuya and Smart Life ecosystems and voice assistants such as Amazon Alexa, Google Assistant and Yandex Alice.

Advantages

The Avatto ZWT100 offers precise temperature measurement (NTC, ±1°C) and a clear LCD that shows the current mode, set temperature, network connection and time. It supports Zigbee 3.0 for reliable smart-home integration and works with Tuya/Smart Life mobile apps for remote management. The device includes a child lock, grouping of multiple thermostats and several control options (app, voice assistants and built-in touchscreen).

Suitable for

• Control of domestic hot water (DHW) boilers and small heating devices within a 3A load limit
• Integration into Tuya or Smart Life smart home setups
• Remote scheduling and automation in apartments, small houses or utility rooms

Key specifications

• Manufacturer: Avatto
• Model: ZWT100-BH-3A
• Connectivity: Zigbee 3.0
• Compatibility: Tuya, Smart Life; voice control via Amazon Alexa, Google Home, Yandex Alice
• Voltage: AC 95–220 V, 50/60 Hz
• Maximum load: 3 A
• Sensor: NTC, accuracy 1°C
• Temperature range: 5°C–60°C (operating)
• Displayed temperature range: 0°C–51°C
• Operating temperature: -5°C–50°C
• Display: LCD (adjustable brightness / can be turned off)
• Power consumption: <1 W
• Dimensions: 86 × 86 × 40 mm

How to use

Install the Avatto ZWT100 on the boiler or mounting surface following the included instruction manual and electrical safety rules. Pair the thermostat with your Zigbee gateway using the Tuya or Smart Life app, then configure weekly or daily schedules (supports 5+2, 6+1 or 7-day modes with up to 6 time periods per day). Control the device from the app, via voice assistants or directly on the touchscreen. Use automatic or manual modes depending on your needs.

Recommendations

For safe and reliable operation, ensure the connected boiler or heating device does not exceed the 3A load rating. Place the thermostat where the NTC sensor can measure representative water or ambient temperature. When integrating into a smart-home system, keep firmware and Tuya/Smart Life app updated and limit access to authorized household members.