Temperature measurement range: -20℃ ~ +60℃, accuracy: ±1℃. Humidity measurement range: 20%RH ~ 99%RH, accuracy: ±5%RH. Built-in sensitive sensor, the readings are automatically updated every 10 seconds. Easy to read: The humidity thermometer adopts a 4.3cm screen, the screen displays the temperature and humidity current in large, clear fonts, and the measurement value can be read even from a distance. The thermometer displays the temperature in Fahrenheit or Celsius. Comfort Indicator: The indoor thermometer and hygrometer display 3 different air conditions, humid, comfortable and dry at a glance. The thermometer and hygrometer are very suitable for monitoring family living conditions. Easy to Install: The humidity thermometer has four installation options. Desktop stand, magnetic back, adhesion, hanging rope. Widely used in bedrooms, greenhouses, changing rooms, wine cellars, warehouses, attics. Battery Powered & Time Setting: Each thermometer comes with 1 CR2032 button cell battery,