Backlight and touchscreen: Humidity meter with 4 inches large LCD display features backlight and touchscreen, making it easier to read in dim light conditions and simple operation Responsive readings: Room thermometer indoor measures humidity temperature gauge to provide accurate readings; Humidity reader indicate current air condition ensures proper humidity control, benefit for skin, allergen and other health problem Max and Min records: Digital thermometer indoor displays max and min humidity and temperature records every 10 seconds; Also displays the trend of each reading, allowing you to react ahead of time, such as adjusting thermostat or humidifier Multiple mounting options: Wall thermometer features tabletop, wall mountable and magnet mountable design, convenient mounting feature for every type of room; Celsius or Fahrenheit selector; Powered by AAA batteries High accuracy: Weather thermometer is highly accurate to 1 Celsius or Fahrenheit and 2-3 percentage relative humidity; ideal for living room, baby room, kitchen, greenhouse, guitar room, office and cellar