Air Velocity Meter with NIST Rotating Vane IR Thermometer Sensing Method Data Logging No Humidity Sensing No Velocity (FPM) 80 to 5906 fpm Velocity (MPS) 0.4 to 30 mps Velocity (MPH) 0.9 to 67.2 mph Velocity (KPH) 1.4 to 108 km/h Velocity (Knots) 0.8 to 58.3 knots Air Velocity Accuracy +/-3 Percent Case Color Black/Red Air Volume 0 to 999 999 cfm Temp Range 14 Degrees to 140 Degrees F Relative Humidity Range Not Applicable Probe Size 2.75 in Dia Cord Length 3.9 ft