The Humimeter RH5-USB Paper Moisture Meter, USB Output, 0 to 100% is specifically designed for measuring moisture content in paper by inserting the "sword probe" into a stack/pile of paper. The measured values can be manually entered into data logger or can be set to automatically record at pre-set intervals The temperature is measured as well and included in the hygromeasurement. Temperature range for measurement is -10 to +60 °C and can either be displayed in °C or °F. The RH5 hygrometer can measure the moisture content in paper or alternatively be used to measure relative air humidity measurements or dew point. An optional USB Output module is available for transferring recorded data to a PC or printer for analysis/documentation. It is supplied with FREE software, a data link cable for connection to a PC and printer, and a USB adapter. There is also an option for a thermal printer with which you can print you measured values without a PC directly from the instrument.For additional protection, we recommend the optional protection sleeve (p/n RH5-SLEEVE) available to prevent the sensor or gauge being damaged during the "insertion" process. A sleeve removal tool is also recommended.