Air Comfort IndicatorHumidity Temperature Indicator features face icons to quickly indicate 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 within 5% RH, measurement data will be updated every 10 seconds to bring you the latest environmental changes. Compact Large Digit DisplayThis slim and lightweight hygrometer thermometer (3.5 x 3.0 inches, weighs only 30 g) is easy to transport. 2.3 inch large LCD screen with large and thick digits makes you read the temperature and humidity more easily and clearly. Backlight and clock functionWith function of backlight and clock, you will get a clear image to read at night or in the dark and convenient to set the alarm clock for your work or study. Multiple Mounting OptionsIndoor wall mounted thermometer equipped of 2 mounting options, including a table stand and a hanging hole, you can install the wall thermometer anywhere you want, such as living room, kitchen, guitar room, office and basement, powered by one AAA battery (included).