Features 5 kinds of wind speed unit conversion: The air flow velocity measurement thermometer device has 5 kinds of wind speed unit conversion: m/s, ft/m, mph, km/h, Knots and 2 kinds of temperature unit conversion: ℃/℉. 12-level wind speed indication: The digital anemometer has 12-level wind speed indication-no need to carry out complicated conversion from numerical value to wind vane, overall wind speed display at MIN/Max/AVG. Backlight: LCD wind speed gauge with backlight, which is convenient for you to read data even when there is insufficient light when you are out for fun. Resolution is 0.1 m/s, 0.3 km/h, 19 ft/min, 0.2 mph, 0.2 Knots Easy to carry: The size of the hand-held digital anemometer is about 145*72*35mm /5.85*2.83*1.38in, and the weight is about 888g. The wind speed meter is light in weight, small in size, and easy to use. Wide range of applications: LCD wind speed gauge is an ideal tool for measuring wind speed in households, offices, automobiles, air conditioners, exhaust fans, sailing boats, sailing, windsurfing, kites, flying sailboats, surfing and fishing. 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 Knots Resolution: 0.1 m/s, 0.3 km/h, 19 ft/min, 0.2 mph, 0.2 Knots Threshold: 0.3m/s, 1 km/h, 60 ft/min, 0.7 mph, 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℃ / 14-122℉ Operating Humidity: 40% RH - 85% RH Storage Temperature: -20-60℃ / -4-140°℉ Input Current: 3mA Power Supply: 1 x 9V 6F22 Battery (NOT included) Product Size: 145*72*35mm / 5.85*2.83*1.38in Weight: Approx. 888g   Package List: 1 x Digital Anemometer (Battery is NOT included) 1 x Manual 1 x Plastic Box 1 x Color Box   Note: 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. Package List