High resolution LCD display: This digital meter displays temperature and humidity simultaneously. A large LCD screen with large digits ensures easy reading. Wide measuring range: Temperature measurement range is -50C to 70C with an accuracy of 1C. Humidity measurement range is 10% RH to 90% RH with an accuracy of 5% RH. Application: This round digital thermometer hygrometer can be used to measure temperature and humidity in homes, baby rooms, offices, workshops, schools, markets, warehouses, and more. Battery installation: Slide the switch on the back of the product to open the battery compartment in the direction of the arrow. Insert a button cell battery into the compartment. Powered by 1 x LR44 battery (battery not included). Specifications: Material: Plastic Size: 45 x 15.5 mm Color: Black Temperature range: -50C to 70C Humidity range: 10% to 99% RH Temperature accuracy: 1C Humidity accuracy: 5% RH Humidity resolution: 1% RH Power supply: 1 x LR44 battery (not included) Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight dimensional variations due to manual measurement. Product includes: 2 x Round Digital Thermometer Hygrometer Shipping quantity: 2 pieces Product color: Black Product size: 45 mm in diameter Note: Manual measurement; please allow 13 cm variation. Color may differ slightly due to lighting and display settings. Actual product received may vary.