The AN340 is a CMM/CFM Anemometer/Psychrometer Datalogger. This meter monitors air velocity/volume, temperature, humidity, wet bulb, and dew point. The user can save up to 12,000 measurements for data analysis. Manually store and recall up to 99 readings. Comes includes an external small vane probe, Windows-compatible software, a USB cable, 6 AAA batteries, and a protective carrying bag.