Applicable for home, office, car, schools, hotels, laboratories, kindergartens, aquaculture, instrument workshops, libraries, schools, factories and places equipped with air conditioning, etc. The mini digital humidity thermometer lets you easily know the temperature and humidity of the environment around you This portable hygrometer thermometer measures indoor humidity and temperature over time, ideal for monitoring living conditions and family health preventing colds, dry skin, asthma, mold. Quick response that measures every 10 seconds with sensitive 24VENTS to provide readings up-to-date and accurate. Bright front panel and with a clear LCD display, easy to read even from a distance.Product Description Package includes: 4xsmall hygrometer thermometers. Specification: Measurement humidity range:10%-99% RH Accuracy of humidity measurement: 5% Humidity display resolution: 1% RH Measuring temperature range: 0c to 50c Temperature measurement accuracy: 1c Temperature display resolution: 0.1c Installation panel hole size: D42mm Operating voltage: 1.5V, size of an LR44 button cell Material: PVC plastic Size: 1.7in x 1.7in x 0.5in/44mm x 44mm x 15mm