Anemometer Hot Wire and Thermistor Sensing Method Data Logging Yes Humidity Sensing No Velocity (FPM) 40 to 3940 Velocity (MPS) 0.2 to 25 Velocity (MPH) 0.5 to 45 Velocity (KPH) 0.7 to 72 Velocity (Knots) 1 to 31 Air Velocity Accuracy +/-5 Percent Air Volume 0 to 1 907 000 cfm Temp Range 32 Degrees to 122 Degrees F Probe Size 0.47 in (12mm) dia. 7.05 ft (215cm) L. Cord Length 3.3 ft. Data Hold Yes Auto Power Off Yes Interface RS-232