INTELLIGENT DIGITAL THERMOMETER HYGROMETERThe mini digital hygrometer has 2 kinds of icons. When the humidity is between 40% and 70%, it will show a smiling face. When the humidity is lower than 40% or higher than 70%, it will display unhappy, allowing you to keep your home healthy and comfortable at a glance. MEASUREMENT RANGE OF TEMPERATURETemperature measurement range: -10~70. Temperature measurement accuracy: 1. The measurement conditions are updated every 10 seconds. HUMIDITY MEASUREMENT ACCURACY]Indoor/outdoor humidity measurement range: 10% RH to 99% RH. The deviation accuracy of humidity measurement: 5% RH. SMALL AND LONG BATTERY LIFEThis hygrometer thermometer (4.3*4.3*1.3 cm, weighing only 21 grams) is small, durable and portable, enough to save space and carry it with you. Powered by CR2032 (battery included), battery working time is up to 12 months. WIDE APPLICATIONThe thermometer and hygrometer can be used in homes, offices, automobiles, schools, hotels, laboratories, kindergartens, aquaculture, instrument workshops, libraries, schools, factories and air-conditioned places.