Air Comfort Indicator: The humidity temperature gauge features face icons to quickly indicate the dry/comfort/humid air condition to alert you to adjust your humidifier or dehumidifier accordingly to create a more comfortable environment. High Accuracy & Fast Update: The indoor thermometer has high accuracy within 1 (1.8) and humidity is 5%RH, the data measurements are updated every 10 seconds to give you the latest changes in the environment. Compact Screen with Large Digits: This hygrometer thermometer with slim and lightweight size (88.7*78mm/3.5*3.0inch) is easy to carry. The 2.3-inch large LCD screen with big, thick digits allows you to read the temperature and humidity more easily and clearly. Backlight and Clock FunctionWith backlight and clock function, you will get a clear reading at night or in the dark and convenient to set the alarm clock for your work or study. Multiple Mounting OptionsIndoor wall thermometer equipped with 2 mounting options, including tabletop stand and hanging hole, you can install the wall thermometer anywhere you like, such as living room, kitchen, guitar room, office and basement, powered by one AAA battery (included). Temperature measuring range: -50~70C (-58~150F) Humidity measuring range: 10%RH ~ 99%RH Temperature measuring accuracy: 1C (1.8F) Humidity measuring accuracy: soil 5%RH Product size: 88.7 x 78 x 21.8 mm. Screen material: LCD liquid crystal display Shell material: environmentally friendly ABS resin Quantity delivered: 1 piece becomeveryrich