About this item Smart Digital Hygrometer ThermometerThe mini digital humidity thermometer lets you easily know the temperature and humidity of the environment around you. Temperature Measurement RangeTemperature measurement range: -50~70. Temperature measurement accuracy: 1. The measurement conditions are updated every 10 seconds. Humidity Measurement Accuracy Indoor/outdoor humidity measurement range: 10%RH-99%RH. Accuracy of humidity measurement deviation: 5% RH Long battery life and small: This hygrometer thermometer (4.3 x 4.3 x 1.3 cm, weighs only 21g) is small, durable and portable enough to save space and take it with you. Powered by CR2032 (battery included), battery life up to 12m Wide ApplicationThe hygrometer thermometer can be applied in home, office, car, school, hotel , clubs, etc. laboratories, kindergartens, aquaculture and instrument workshop. , libraries, schools, factories and air-conditioned places, etc.