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 airtemperature. LCD screen displays the measuring value at MIN/Max/AVG. It is widelyused 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 airtemperature unit conversion: /.2. 12 levels air speed indication - You don't need to make complicatedconversion 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, aircondition, 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 (Batteryis NOT included)1 x Manual