Smart Digital Thermometer-HygrometerUsing the digital mini humidity thermometer, you can easily determine the temperature and humidity of your surroundings. Temperature measurement range: -5070. Temperature measurement accuracy: 1C. The measurement conditions are updated every 10 seconds. [Humidity measurement accuracy] Indoor and outdoor humidity measurement range: 10%RH-99%RH. Humidity measurement accuracy 5%RH. Compact & Long Battery LifeThis hygrometer thermometer (4.3 x 4.3 x 1.3 cm, weighing only 21 grams) is small, durable and portable enough to save space and carry it anywhere. Powered by CR2032 (battery included), battery life up to 12 months. Wide range of usesThe thermometer hygrometer can be used in homes, offices, cars, schools, hotels, laboratories, kindergartens, aquaculture, instrument workshops, libraries, schools, factories and places with air conditioning, etc.