Handheld Anemometer accurate wind measurement

Description Introduction:     Feature: 1>   Mini Digital Anemometer 2>   Air Velocity & Temperature Measurement (Comes with Thermometer Feature) 3>   Max/Average/Current air velocity measurement 4>   C/F Temperature unit selection 5>   Wind Speed Range/Unit Available: 0 – 30 m/s 0 – 5860 Ft/Min 0 – 55 Knots 0 – 90 Km/Hr 0 – 60 Mph 5>   Five units of air velocity: M/s, Km/h, ft/min, Knots, mph 6>   Beaufort scale 7>   Backlight display 8>   Manual/Auto power shut off 9>   Wind chill indication 10> Low battery indication 11> Powered By (1) CR2032 Battery (not inclued) 12> Approved by CE/ROHS/FCC standard 13> 1 year guarantee   Specification: Item Description Measuring items Air velocity (Wind speed), Air temperature Range of Air velocity 0~30m/s, 0~90km/h, 0~5860ft/min, 0~55knots, 0~65mph Accuracy of Air velocity ±5% Range of Air temperature -10-45C (14-113F) Accuracy of Air temperature ±2C (3.6F) Resolution of Air velocity 0.1m/s, 0.2C Battery CR2032 (not included) Thermometer NTC thermometer Operating temperature -10-45C (14-113F) Operating humidity Less than 90%RH Store temperature -40 ~ 60 (-40 F~140F) Current consumption Approx. 3mA Weight 52g Dimension 40x18x105mm   Packet Content: 1 x hand-held anemometer 1 x Neck Strap/Lanyard 1 x Instruction Manual