The Digi-Sense data logging anemometer is designed for precision air velocity measurements in five user-selectable units (ft/min, m/s, mph, km/h, or knots). The instrument will help you meet cooling and environmental requirements for safety and comfort. A metallic mounting stand is included that provides an opportunity to position the anemometer to best fit the application. Built-in USB interface and included software allow logged data to be easily downloaded to a PC for analysis and graphing. Digi-Sense comes pre-calibrated, saving you hundreds of dollars and extra waiting time to calibrate separately