Digital Beaufort Wind Scale Anemometer Thermometer

Features:
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 /F.
Wind speed range: 0-30m/s Wind temperature range: -10 - 45 (14-113F) Current/max/average wind speed reading.
Wind speed unit: m/s?↓ Km/h?↓ ft/min?↓ Knots?↓ mph. Powered by a 3V CR2032 battery.

Specifications:
Air Velocity: Range: 0 - 30m/s?↓ 0 - 90km/h?↓ 0 - 5860ft/min?↓ 0 - 65mph?↓ 0 - 55Knots
Resolution: 0.1m/s?↓ 0.3km/h?↓ 19ft/min?↓ 0.2mph?↓ 0.2
Knots Threshold: 0.1m/s?↓ 0.3km/h?↓ 39ft/min?↓ 0.2mph?↓ 0.1
Knots Accuracy: +/- 5%
Air Temperature: Range: -10 - 45?↓ 14 - 113
F Resolution: 0.2?↓ 0.36
F Accuracy: ?¨↑2?↓ ?¨↑3.6F
Power Supply: 1 * 3V CR2032 battery(not included)
Thermometer: NTC Thermometer Operating Temperature: -10~45 (14~113F)
Operating Humidity: less than or equal to 90%RH
Storage Temperature: -40~60?↓ -40~140F
Current Consumption: About 3mA Item Size: 105 * 40 * 18mm Item weight: 50g
Package including: 1 * Digital Anemometer 1 * Lanyard 1 * User Manual"