[Measurable Temperature Range] -50～70℃, Temperature Measurement Accuracy: ±1.0℃. [Measurable Humidity Range] 10% ~ 99% RH, Humidity Measurement Accuracy: ±5% RH, measuring once every 10 seconds. [Product Size] Battery: One LR44 button cell battery. The compact and portable thermometer and hygrometer are suitable for various scenarios. [Thermometer and Hygrometer] This portable thermometer and hygrometer measures indoor humidity and temperature to help you understand indoor air conditions. [Wide Range of Applications] Mini thermometers and hygrometers are widely used in living rooms, greenhouses, instrument rooms, wine cellars, basements, warehouses, attics, nurseries, and changing rooms.