Ligrometer is operated by resistance and has automatic temperature compensation Automatic shutdown 5 minutes after the last operation Data retention function Low battery warning Compact and easy-to-use portable humidity measurement readings are instantaneous Digital display with backlight provides accurate and clear readings even when you are in dark conditions By monitoring dryness you can save time and money and help prevent moisture deterioration and decay during storage so management will be more convenient and efficient, Manufacturer: Santiway