REED Instruments R4000SD-KIT2 Airflow Meters & Thermo-Anemometers; Maximum Air Velocity ft/min (Feet): 5906; Min Air Velocity ft/min (Feet): 79; Resolution: 0.1 m/s, km/h, mph, knot, 1 fpm; Maximum Measuring Range (Deg F): 122.000; Measures or Tests: