Thermostat S2 is a product that can realize smart control of the central air-conditioning system. Based on Zigbee protocol, it needs to pair with the Hub to be added to the Mijia app. Thermostat S2 is suitable for central air conditioning fan coil series, air duct systems, or floor heating. The panel buttons can control the opening and closing of the fan coil electric valve, electric ball valve, electric heating heater, or air valve at the end of the air conditioning system to realize such functions as turning the air conditioner on/off, temperature adjustment, wind speed adjustment and so on. With smart control of the central air conditioning system, you can set a timer or scene, for example, the air conditioner automatically turns on once you arrive home, and turns off after you leave home. You can pair the device with other smart devices, such as Door and Window Sensor, Motion Sensor, and so on, to realize that the air conditioner turns on automatically when someone is detected and vice versa. You can set a target temperature, and the indoor unit temperature automatically adjusts according to what it detects to achieve constant temperature control. Thermostat S2 is suitable for use in apartments, residences, and medium-sized or above office areas that use central air-conditioning systems. It can help users centrally manage the air-conditioning system, realize the remote control, and turn on and off the air-conditioning regularly to reduce energy consumption;