Suitable Compatible with home, office, car, schools, hotels, laboratories, Compatible with schools, aquaculture, instrument workshops, libraries, schools, factories and air conditioning equipment, etc. This portable hygrometer thermometer measures indoor humidity and temperature in time, helps to adjust settings Compatible with humidifiers, dehumidifiers and moisture meters, perfect Compatible with monitoring families' living Compatible with conditions and health by Compatible with preventing Compatible with colds, dry skin, asthma, mold. Fast response, measures every 10 seconds with 24 sensitive VENTS Compatible with providing updated and accurate readings, wide measuring range, measures temperature from 0.0 to 50.0, measures humidity from 10% to 99%. (Please allow some margin of error) The temperature range is only Celsius on this model, light and black front panel with a clear LCD screen, easy to read even from a long distance. Accuracy of humidity measurement: + 5% Resolution of humidity display: 1% RH Measuring temperature range: 0 °C to 50 Celsius Accuracy of temperature measurement: + 1 Celsius Resolution of temperature display: 0.1 Celsius Hole size Compatible with panel installation: D42 mm Operating voltage: 1.5 V, one button cell battery of size LR44 Color: Black Material: Plastic shell ABS Size: 45 * 15.5 mm Package contents: 5 * digital hygrometer 5 * button cell batteries