Anemometer, Minimum Velocity Measured 0 fpm, Probe Diameter 1.66 in, Probe Type Rotating Vane, Maximum Velocity Measured 1,990 fpm, Minimum Dew Point Measured Not Applicable, Minimum Hot Wire Probe Length Not Applicable, Minimum Operating Temperature -40 Degrees F, Minimum Relative Humidity Measured 1 Percent, Includes Handheld Anemometer, Storage Pouch, Relative Humidity Accuracy +/-1 Percent, Temperature Accuracy +/ 2.0 Degrees , Wind Speed Units ft/min, km/hr, knot, m/sec, mph