GVDA Digital Anemometer Portable Wind Speed Meter Air Velocity Gauge Windmeter LCD Backlight Display Temperature Humidity Meter
This is a professional digital anemometer with stable performance, safety and reliability. It can measure wind speed,temperature & humidity. Widely used in wind energy, meteorology, industry, agriculture, highways, airports and ports, etc.

What are the Air Flow, Temperature and Humidity Measurement Ranges?
Air Flow (Wind Speed) Measurement Range:
m/s (meters per second): 0.70 to 30.00 m/s
km/h (kilometers per hour): 2.50 to 108.0 km/h
ft/s (feet per second): 2.30 to 98.50 ft/s
ft/m (feet per minute): 137 .0 to 5900 ft/m
knots (nautical miles per hour): 1.30 to 58.30 knots
mil/h (miles per hour): 1.50 to 67.10 mile/h
* CFM (Q) = Wind Velocity in Feet Per Minute (V) x Duct Cross Sectional Area (A)
Temperature Measurement Range: -4.0°F~140.0°F(-20.0°C ~ 60.0°C)
Humidity Measurement Range: 0.0% ~99.9%RH