Compared to other similar products, our smart thermostat can be controlled by voice and phone APP, making your life more convenient. With help of the thermostat, it can help you remotely control the temperature of some devices like water heater and wall heater before you go home. It is made of high-quality PC and LCD screen material. Free to choose manual mode or auto mode for different purposes. No need to worry about power failure, data memory when power is off. The length of this product is 8.6cm, the width is 8.6cm and the height is 4cm. Large LCD touch screen display with backlight, easy to read. The thermostat supports different temperature setting accordingly with 6 or 2 time-modes daily. This product is perfectly suitable for home, household, dorm, bedroom, living room, etc. Keypad locking function is designed to prevent children from operating by mistake. Item Name: Smart Thermostat Material: PC, LCD Screen 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 ZigBee 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: 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. Package Includes: 1 x Smart Thermostat 1 x User Manual