15 air speed unit conversion: m/s, ft/m, mph, km/h, Knots; 2 air temperature unit conversion: /. 212 levels air speed indication - You don't need to make complicated conversion from value to wind scale. 3With backlight for easy reading at darkness. 4Overall air speed display at MIN/Max/AVG. 5Lightweight with small volume, easy and convenient to use. Description:This digital anemometer is used to measure air speed and air temperature. LCD screen displays the measuring value at MIN/Max/AVG. It is widely used to measure air speed for home, office, car, air condition, exhaust fan, sailboat, navigation, etc.Features:1. 5 air speed unit conversion: m/s, ft/m, mph, km/h, Knots; 2 air temperature unit conversion: /.2. 12 levels air speed indication - You don't need to make complicated conversion from value to wind scale.3. With backlight for easy reading at darkness.4. Overall air speed display at MIN/Max/AVG.5. Lightweight with small volume, easy and convenient to use.6. Perfect tool for measuring air speed at home, office, car, air condition, exhaust fan, sailboat, navigation, etc.Specifications:Air Speed:Range: 0-45 m/s, 0-140 km/h, 0-8800 ft/min, 0-100 mph, 0-88 KnotsResolution: 0.1 m/s, 0.3 km/h, 19 ft/min, 0.2 mph, 0.2 KnotsThreshold: 0.3m/s, 1 km/h, 60 ft/min, 0.7 mph, 0.6 Knots.Air Temperature:Range : 0-45, 32F-113Resolution: 0.2, 0.36Accuracy: 2, 3.6Operating Temperature: -10C-50 / 14-122Operating Humidity: 40% RH - 85% RHStorage Temperature: -20-60 / -4-140Input Current: 3mAPower Supply: 1 x 9V 6F22Battery (NOT included)Product Size: 145*72*35mm / 5.85*2.83*1.38inWeight: Approx. 888gPackage List:1 x Digital Anemometer (Battery is NOT included)1 x Manual1 x Plastic Box1 x Color BoxNote:1. Due to the difference between monitors and light effect, the pictures may not reflect the actual color of the item. Please take the real one as standard.2. Please allow slight error due to manual measurement. Thanks for your understanding.