This smart thermostat can be controlled by voice and phone APP, making your life more convenient. You can remotely control the temperature of some devices like water heater and wall heater with this smart thermostat before you go home. It is made of high-quality pc and lcd material. The length of this product is 8.6cm, the width is 8.6cm and the height is 4cm. It is suitable for home, office, and dorm, etc. Item Name: Smart Thermostat Material: PC, LCD Features: Voice-control, Memory Function, Temperature Adjustment Style A: WT100-3A Water Heater Style B: WT100-3A Wall Heater Style C: WT100-16A Electric Heating APP: Works with Smart Life, Works with Tuya Smart Voice Control: for Amazon Alexa, for Google Home, Works with Yandex Alice, etc. Temperature Sensor: NTC Temperature Accuracy: 1 Degree Celsius Display: LCD Operating Temperature: -5 Degree Celsius-50 Degree Celsius Self-Power Consumption: Less Than1W Temperature Setting Range: 5 Degree Celsius-60 Degree Celsius Temperature Display Range: 0 Degree Celsius-51 Degree Celsius Load Current: Electric Heating 16A, Water Heater 3A, Boiler Heating 3A Voltage: AC 95-220V 50/60Hz Size: 86 x 86 x 13(Front) + 27(Rear) mm Electrical Safety Standards: GB14536.1-2008 Size Details: LxWxH: 8.6cm x 8.6cm x 4cm/3.39" x 3.39" x 1.57"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Due to the thermostat with glass mirror panel, the color may change in different environments. When you install on the wall and power it on, it will turn dark black. Package Includes: 1 x Smart Thermostat 1 x User Manual