Features 5 air speed units -- Conversion of 5 air speed units: m/s, ft/m, mph, km/h, knot; 2 conversion of air temperature unit: ℃/℉. Wide application: perfect tool for measuring air speed at home, office, car, air conditioner, exhaust fan, sailing boat, navigation, etc. Easy to read - Backlit for easy reading in the dark. Displays total air speed at MIN/Max/AVG. 12-stage air speed display - you don't have to make complicated conversion from value to wind scale. Easy to carry - Lightweight with low volume, easy and convenient to use. Description: This digital anemometer is used to measure air velocity and air temperature. The LCD screen shows the reading at MIN/Max/AVG. It is widely used to adjust the air speed for home, office, car, air conditioner, exhaust fan, sailing boat, navigation, etc. Specifications: Air speed: Range: 0-45 m/s, 0-140 km/h, 0-8800 ft/min, 0-100 mph, 0-88 knots. Resolution: 0.1 m/s, 0.3 km/h, 19 ft/min, 0.2 mph, 0.2 knots Threshold: 0.3m/s, 1km/h, 60ft/min, 0.7mph, 0.6 knots. Air temperature: Range: 0-45℃, 32°F-113℉. Resolution: 0.2℃, 0.36℉. Accuracy: ±2℃, ±3.6℉. Operating temperature: -10°C - 50°C / 14-122°F. Operating humidity: 40% RH - 85% RH. Storage temperature: -20-60℃/-4-140°℉. Input current: 3 mA. Power supply: 1 x 9V 6F22 battery (not included). Product size: 145 x 72 x 35 mm/5.85 x 2.83 x 1.38 inches. Weight: approx. 888 g. Package list: 1 x digital anemometer (battery is not included). 1 x user manual (English language 1 x plastic box. 1 x paint box. Note: 1. Due to the difference between monitors and light effects, the pictures may not reflect the actual colour of the item. Please take the real one as standard. 2. Please allow for slight errors due to manual measurement. Package List