Anemometer Rotating Vane and Thermistor Sensing Method Data Logging No Humidity Sensing No Velocity (FPM) 80 to 5 900 fpm Velocity (MPS) 0.4 to 30 mps Velocity (MPH) 0.9 to 67 mph Velocity (KPH) 1.4 to 108 kph Velocity (Knots) 0.8 to 58.3 knots Air Velocity Accuracy +/-3 Percent Air Volume 0 to 9 999 cfm Temp Range 14 Degrees to 140 Degrees F Probe Size 2.83 in dia Cord Length 3.9 ft Data Hold Yes Auto Power Off Yes