Feature:Wind speed & temperature measurement, 2 in 1 function.Temperature display in Celsius or Fahrenheit, convenient to understand data value.The current wind speed,the average wind speed,Maximum wind speed selection.Low battery warning, so you can quickly to replace battery for the meter.LCD backlight(support turn off or on), clear data reading.Auto/Manual off, don't worry about the power will completely consume as forget to shut down.Specification:BrandSMART SENSORModelAS816Wind Speed Measuring 0.3-30m/s Wind Speed Accuracy ±5% + 0.1 Wind Speed Units m/s, Ft/min, Knots, km/hr, Mph Current/Average Measuring yes Temperature Measuring Range 0-50 Temp. Resolution 0.1℃ ℃/℉ Selection yes Backlight Display yes Low Battery Indication yes Data Hold Function yes Resolution 0.1m/s Max & Min Measuring Max only Data Store --- Auto Power Off yes Power 3*1.5 AAA Battery(not included) Product Weight / Size 117g /162*47*25mm LCD display Wind / temperature measurement range: Unit Range Resolution Accuracy ℃ 0.0 ℃ -45.0 ℃ 0.2 2 ℃ ℉ 32.0 ℉-113.0 ℉ 0.36 3.6 ℉ Current consumption 20mA Weight 59g (not including battery) Battery 3V (2*AAA) Unit Range Resolution Threshold Accuracy m/s 0~30 0.1 0.3 ±5% Knots 0~55 0.2 0.1 Km/h 0~90 0.3 0.3 Mph 0~65 0.2 0.2 The operating environment: humidity: 40% ~ 85% temperature: - 10 ℃ to 50 ℃ (14 ℉ ~ 122 ℉) Storage environment: humidity: 10% ~ 90% temperature: - 20 ℃ ~ 60 ℃ (140 ℉ - 4 ~ ℉)Package list:1 * Anemometer1 * Probe1 * User manual1 * CE CertificationNote:The actual product color may deviate from the photo due to light.There may be a slight deviation in the measurement of product.