Handheld Humidity Meter, Digital Hygrometer Thermometer 0~100% RH/ -30~60°C (-22~140°F) LCD Humidity Monitor, Moisture Tester Gauge for Outdoor, Home, Industry, Agriculture HVAC - Battery Included

【DUAL DISPLAY】-This digital humidity gauge is designed to combine the functions of humidity meter and temperature meter, temperature range: -30 °C~60 °C (-22 °F~140 °F); Humidity range: 0~100 percent RH. The Hygrometer small is enough to put it in your pocket without any problem. You can carry it anywhere anytime. 【WIDE APPLICATIONS】-The handheld humidity meter can measure a wide range of temperature and humidity at same time, used for HVAC, industry, agriculture, meteorology, medical, daily life, building engineer, paranormal investigator, machine room, greenhouse, warehouse, data storeroom and etc. 【MULTIPLE FUNCTION】-Psychrometer with adjustable LCD backlight for clearly showing data of temperature & humidity at the same time, max hold and min hold function, auto shutdown without operation to save power. 【EASY TO USE】-.Normally you don’t need to calibrate hygrometer because it was calibrated before delivery. If you want to calibrate it, it needs primary standard source, we suggest only professional engineers could to calibrate the meter. 【ABOUT US】-Hygrometer thermometer comes with a user manual which is easy to read. If you have any problem or suggestions about our moisture tester gauge please let us know it and we provide 7*24 hours technical support and customer service.