This room thermostat, an upgrade on the original FCU system, operates by sensing the air temperature，When the room temperature exceeds the set temperature, it automatically activates the cooling function. Furthermore, if the temperature difference surpasses the set value, the secondary cooling is engaged to achieve rapid cooling..     Key Functions: •        WiFi Remote control •        Attractive Touchscreen LCD Display •        White Backlight •        Adjustable MAN mode and PRG mode •        Working system selectable   •        7 days Programmable thermostat •        Room or SET temperature display •        Open Window Detection •        Child Lock Function •        Frost protection •        CE, RoHs, RED It is worth mentioning that this 2-stage 7-day programmable thermostat, but also a reliable and cutting-edge tuya wifi thermostat that exceeds industry standards. Its advanced features and exceptional performance set it apart from traditional thermostats.