In evaluating the relative humidity of a given area, some of the problems that might be faced when using testing equipments may pertain to a constant need for calibration and a test of device accuracy. Before the Extech RHT50 gets to your destination, be assured that it has already been tested and calibrated. This is a surety of accuracy of measurements of humidity, temperature and atmospheric pressure. With a capacity of recording 10,000 readings, humidity, temperature and pressure can be monitored and gathered via the use of the analysis software with which the datalogger is provided. The Extech RHT50 can also be plugged into a PC using its built-in USB connector to download data for printing or exportation to other applications.