Digital Anemometer Wind Speed Meter -10 45C Temperature Tester Anemometro with LCD Backlight Display and Specifications: Air Velocity. Range: 0 - 30m/s, 0 - 90km/h, 0 - 5860ft/min, 0 - 65mph, 0 - 55Knots. Resolution: 0.1m/s, 0.3km/h, 19ft/min, 0.2mph, 0.2Knots. Threshold: 0.1m/s, 0.3km/h, 39ft/min, 0.2mph, 0.1Knots. Accuracy: +/- 5%. Air Temperature. Range: -10°C +45°C, 14°F 113°F. Resolution: 0.2°F, 0.36°F. Accuracy: ±2°C, ±3.6°F. Thermometer: NTC Thermometer. Operating Temperature: -10°C +45°C (14°F 113°F ). Operating Humidity: Less than or equal to 90% RH Storage Temperature: -40°C +60°C, -40°F 140°F. Current Consumption: About 3mA. Powered by a 3V CR2032 battery (not included) . Dimensions: 10.7cm x 4.5cm x 2.1cm - 4.21inch x 1.77inch x 0.83inch. Features: 1.Measure wind speed and temperature. Large easy-to-read LCD display with backlight. Wind speed in Beaufort wind scale bar graph. 2.Wind chill indication. 3.Data hold function. 4.High precision pressure sensor 5.Quick response, external thermistor. 6.Auto/manual power off. 7.Temperature display in Celsius Fahrenheit. 8.Wind speed range: 0-30m/s. 9.Wind temperature range: -10 - 45°C (14-113F). 10.Current/max/average wind speed reading. 11.Wind speed unit: m/s, Km/h, ft/min, Knots, mph. Package Included: 1* Piece Digital Anemometer (battery not included) Note: this product comes without retail boxes Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.