Features： 1、Pocket Anemometer Usage: Electric power, steel, petrochemical, energy saving offshore fishing industry, various fan manufacturing industries, industries that require ventilation and exhaust systems, etc. 2、Measurement Object: Handheld digital anemometer can measure wind speed, wind temperature, and wind power level. 3、Measuring Wind Speed and Temperature: Digital anemometer can simultaneously measuring wind speed and temperature. 4、Selection Function: Handheld anemometer has maximum wind speed, average wind speed and current wind speed selection. 5、Unit Selection: Portable anemometer has five wind speed units selection of m/s, km/h, ft/min, knots, mph, and ℃ and ℉ temperature unit selection. 6、Multi Functions: Beaufort scale, LCD backlight display, Manual and automatic shutdown, freeze reminder, low battery prompt. Specification： Item Type: Pocket Anemometer Product Material: Plastic Weight: Approx. 100g / 3.5oz Temperature Sensor: NTC Negative Temperature Coefficient Resistance Operating Temperature: -10℃ ~ +45℃ (14 DegreeF ~ 113 DegreeF) Operating Humidity: Less Than 90% RH Storage Temperature: -40℃ ~ +60℃ (-40 DegreeF ~ 140 DegreeF) Battery: 1 x CR2032 Button Cell (Shipped Without Battery) Measurement Object: Wind Speed, Wind Temperature, And Wind Power Level Product Size: Approx. 104.3x57.8x19.9mm / 4.1x2.3x0.8in Function: 1. Wind Speed Units And Measurement Mode Settings; 2. Temperature Unit Setting; 3. Backlight; 4. Measurement; Wind Temperature Measurement UnitMeasuring RangeResolutionAccuracy ℃-10℃ ~ +45℃0.2±2℃ ℉14℉ ~ 113℉0.36±3.6℉ Wind Speed Measurement UnitMeasuring RangeAccuracyResolution Lowest Starting Point Value m/s0~300.10.1±5% ft/min0~58601939 knots0~550.20.1 km/h0~900.30.3 mph0~650.20.2 Package List： 1 x Anemometer With Hanging Rope 1 x Manual