The Extech 407113 CFM Metal Vane Anemometer is a high-precision instrument for measuring air velocity and volumetric flow rate. This anemometer is designed for professionals in HVAC, industrial, and environmental applications, providing accurate measurements and a range of useful features.The Extech 407113 measures air velocity across a wide range, from 100 to 6890 ft./min, 0.5 to 126 m/sec, 1.8 to 126 km/hr, 1.1 to 78.3 mph, and 1.0 to 68 knots, with an accuracy of +/- 2% of velocity. This ensures precise and reliable measurements for various airspeed conditions.In addition to air velocity, this meter also measures volumetric flow rates. It can measure from 0 to 999,900 cubic feet per minute and 0 to 999,900 cubic meters per minute, allowing you to assess and monitor air flow rates accurately.The Extech 407113 further includes a temperature measurement function, with a range of 32 to 175°F (0 to 80°C). This allows you to simultaneously monitor both air velocity and temperature, providing valuable insights for airflow analysis and temperature control.With features such as Min/Max and Data Hold, this meter offers convenience in capturing and recording air velocity readings. The Min/Max function allows you to track the minimum and maximum values over a period of time, while the Data Hold function freezes the displayed reading for easy recording or note-taking.The Auto Power Off feature helps conserve battery life by automatically turning off the meter after a period of inactivity, ensuring efficient use and extending the lifespan of the batteries.The Extech 407113 is equipped with a built-in RS-232 interface, providing connectivity to external devices such as computers. With optional Data Acquisition Software, you can enhance the functionality of the meter by capturing, analyzing, and documenting the measurement data for further analysis or reporting.