【Smart Digital Thermometer Hygrometer】The mini digital humidity meter thermometer allows you to easily know the temperature and humidity of the environment around you.【Temperature Measurement Range】Temperature measurement range: -50℃~70℃. Temperature measurement accuracy: ±1℃. Measurement conditions are updated every 10 seconds.【Humidity Measurement Accuracy】Indoor/outdoor humidity measurement range: 10%RH-99%RH. Humidity measurement deviation accuracy: ±5%RH【Small and Long Battery Life】This hygrometer thermometer (4.3*4.3*1.3cm, weighs only 21g) Small, durable and portable enough to save space and carry around. Powered by CR2032 (battery included), battery life up to 12 months【Wide Application】The thermometer hygrometer can be applicable for home, office, car, schools, hotels, laboratories, kindergartens, aquaculture, instrument workshop, libraries, schools, factories and places with air conditioning, etc.