Data logging thermo-hygrometer that tracks ambient temperature, relative humidity, dew point, and wet-bulb temperature, with a built-in Type J/K thermocouple input for contact-temperature readings. Logs to a removable SD card (up to 16GB), either manually up to 99 points or automatically at intervals from 1 to 3600 seconds, then exports straight to an Excel file without extra software. Backlit LCD display with data hold and Max/Min functions makes it suited for lab, museum, and other controlled-environment monitoring.