Name: WiFi Thermostat Liquid Crystal Panel : 1: APP Remote Control 2: Voice Control 3: Program mode 4: 5 Internal and External Temperature Sensors: Simple installation 6: Power Failure Recovery 7: Child Lock Note: Please find a professional person in wiring, please do not wire by yourself > The thermostat is a device that directly controls one or more sources of heat and cold sources to maintain the required temperature. To achieve this function, the thermostat must have a sensitive element and a converter. The amount of sensitive components changes the temperature and produces the required effect on the converter. According to the temperature changes of the working environment, physical changes occur inside the switch, which produces a series of automatic control elements that produce certain special effects, produce or disconnect . The device is called a temperature controller.