SMART SENSOR ST6816 Handheld Digital Anemometer Wind Speed Measurement Measurer Air Velocity Airflow Meter Gauge with LCD Backlight Measuring Range 0.40m/s~30.00m/s Maximum/Minimum/Average Value Storage Bag for Shooting(Batteries Not Included)

Features:
[Wide Application] It can measure air velocity and air volume, which can be used in wind energy, meteorology, industry, agriculture, hydrology and water conservancy, environmental protection, highways, airports, etc.
[Various Units of Measure] Press the UNIT button to select unit(m/s, km/h, mil/h, ft/m, ft/s, knots) when measuring air velocity; and select unit(CMS, CMM, CFM) when measuring airflow.
[Accurate Measurement] Measuring range from 0.40m/s to 30.00m/s; supports beaufort scale from wind force 0 to 12.
[Practical Function] Press the Data Hold button to freeze the displayed reading; auto power off in 10 minutes without any operation; maximum/minimum/average value mode is enabled.
[User Friendly] Measures 7.75*2.67*1.1in and weighs only 4.79oz, featuring compact and lightweight; and LCD backlight ensures clear visibility even in low-light area.
Note:
*Batteries are not included.
*Do not touch the fan blade with force.
*Do not store or operate the instrument in area with high temperature or humidity.
*In use, do not let the strong light directly shine on the fan, in order to avoid measurement errors.
*Avoid violent vibration.
*Remove the battery before storing the instrument for a long time.
*To measure the airflow, the cross-sectional area of the tested air duct must be determined and input into the anemometer.
Parameters:
Display: LCD
Max. Counts: 9999
Air Velocity: 0.40-30.00 m/s
Sampling Rate: Approx. One reading per second
Sensor: Air velocity/flow sensor; angled vane arms with bearing
Beaufort Wind Scale: 0-12
Max/Min/Avg: Record and view minimum, maximum, average
Data Hold: Freeze reading
Operating Conditions: 0-40℃(Temperature), ＜80%RH(Humidity), ＜2(altitude)
Auto Power Off: 10 minutes
Power Supply: 3 * 1.5V AAA(LR03) batteries(not included)
Accuracy