Click on the following link for product video demo presentation.  https://youtu.be/JjeHQ_qy4qw

GM816 Digital Wind-Speed Airflow Gauge Meter Anemometer Thermometer Backlight


This handy palm sized anemometer is ideal for weather enthusiast, lovers of kite flying, kite-surfing, wind-surfing, paragliding and sailors


Measure wind speed and temperature
Large easy-to-read LCD display with backlight
Wind speed in Beaufort wind scale bar graph
Wind chill indication
Data hold function
High precision pressure sensor
Quick response, external thermistor
Auto/manual power off
Temperature display in Celsius Fahrenheit
Current/max/average wind speed reading
Powered by a 3V CR2032 battery(Included)


Specifications:
Material: Plastic+Metal
Color: Black+Yellow
Air Velocity
Range: 0 - 30m/s, 0 - 90km/h, 0 - 58 60ft/min, 0 - 65mph, 0 - 55Knots.
Resolution: 0.1m/s, 0.3km/h, 19ft/min, 0.2mph, 0.2Knots.
Threshold: 0.1m/s, 0.3km/h, 39ft/min, 0.2mph, 0.1Knots.
Accuracy: +/- 5%.
Air Temperature Range: -10°C ~ +45°C, 14°F~ 113°F
Resolution: 0.2°F, 0.36°F.
Accuracy: ±2°C, ±3.6°F
Thermometer: NTC Thermometer
Operating Temperature: -10°C ~ +45°C (14°F~ 113°F ).
Operating Humidity: Less than or equal to 90% RH
Storage Temperature: -40°C ~ +60°C, -40°F ~140°F.
Current Consumption: About 3mA.
Wind speed range: 0-30m/s.
Wind speed unit: m/s, Km/h, ft/min, Knots, mph.
Size: 10.7cm x 4.5cm x 2.1cm - 4.21inch x 1.77inch x 0.83inch