WIFI smart room thermometer is designed to on or off control the fans and valves in air conditioner applications through comparison of the room temperature and setting temp. As reaching the aim of the comfort and saving energy. Whether you are at home or on the road, you can remotely control the thermostat through the smart APP on your phone or tablet. It is constructed of PC material. The length of this product is 8.6cm and width is 8.6cm. It can work for Alex audio, and work for Google Home, for Rokid audio, for Tmall Genie, for Dingdong, and for Tencent Xiaowei. Item Name: Smart Thermostat Material: PC Features: Easy to Use, Small Volume, APP Remote Control Use Scene: Home, Office Size Details: LxW: 8.6cm x 8.6cm/3.39" x 3.39"(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 1 x Screw Accessories