Anemometer Hot Wire and Thermistor Sensing Method Data Logging No Humidity Sensing Yes Velocity (FPM) 99 to 3 937 fpm Velocity (MPS) 0.5 to 20 mps Air Velocity Accuracy +/-3 Percent Air Volume 0 to 99999 cfm Temp Range -4 Degrees to 140 Degrees F Relative Humidity Range 0.1 Percent to 99.9 Percent Probe Size 39 in Cord Length 3 in (1m) Data Hold Yes Auto Power Off Yes Interface Digital Includes Battery Hard Case Manual