This set controls the temperature of the house by controlling the wall-hung boiler. As long as you install the Radio Frequency Receiver device near the wall-hung boiler, even if the Radio Frequency Thermostat is placed in the living room or room (with an open distance of 200 meters), the Radio Frequency Receiver can be controlled by the Radio Frequency Thermostat. Features: Mobilephone APP Control: After downloading the mobilephone Tuya/SmartLife APP, you can control the switch whenever and wherever you want via the mobilephone APP. Whether you are on vacation, at work or home, you can enjoy the convenience of the mobilephone APP. Temperature data can be monitored in real time and historical temperatures can be queried. Voice Control: High compatibility, compatible with Alexa and Google Assistant for voice control, maximizing the comfort and economy of your home environment. Manual & Automatic Modes: Two modes are available, free choice of manual mode or automatic mode according to different uses. Weekly Programmable: 5+2/6+1/7 days weekly programming function for choice. The thermostat supports different temperature settings and running schedules. 6 time slots on weekdays, 2 time slots on rest days. Frost Protecting Function: When the temperature reaches the system low temperature, the frost protecting function will automatically turn on for a short time to prevents the waterpipes from freezing or bursting. Child Lock: Equipped with child safety lock function, the keypad lock function prevents the misoperation by children. Group-Control & Family Share Function: Realize group control in different room in special scene together with your family member. Wide Applications: Comfort and energy savings can be improved through precise temperature control according to the user's habits and preferences. Suitable for used in residential, shopping mall, hotel heating, etc. Specifications: Name: Intelligent Thermostat Material: PC Battery: 3 * 1.5V batteries (not included) Temperature hysteresis: 0.5-10 Minimum temperature setting: 0.5 Temperature calibration: -9.9 to 9.9 Item size: Thermostat size: 86 * 86 * 31mm / 3.39 * 3.39 * 1.22in Receiver size: 86 * 86 * 26mm / 3.39 * 3.39 * 1.04in Thermostat bracket size: 72 * 78 * 64mm / 2.83 * 3.07 * 2.52in Package size: 193 * 100 * 67mm / 7.60 * 3.94 * 2.64in Package weight: 390g / 13.76ounce Packing List: 1 * Intelligent Thermostat 1 * Receiver 1 * Bracket