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°F ~ 113°F) Operating Humidity: Less Than 90% RH Storage Temperature: -40℃ ~ +60℃ (-40°F ~ 140°F) 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 MeasurementUnitMeasuring RangeResolutionAccuracy℃-10℃ ~ +45℃0.2±2℃℉14℉ ~ 113℉0.36±3.6℉Wind Speed MeasurementUnitMeasuring RangeAccuracyResolution Lowest Starting Point Valuem/s0~300.10.1±5%ft/min0~58601939knots0~550.20.1km/h0~900.30.3mph0~650.20.2 Package List:1 x Anemometer With Hanging Rope 1 x Manual Features Pocket Anemometer Usage: Electric power, steel, petrochemical, energy saving offshore fishing industry, various fan manufacturing industries, industries that require ventilation and exhaust systems, etc. Measurement Object: Handheld digital anemometer can measure wind speed, wind temperature, and wind power level. Unit Selection: Portable anemometer has five wind speed units selection of m/s, km/h, ft/min, knots, mph, and ℃ and ℉ temperature unit selection. Selection Function: Handheld anemometer has maximum wind speed, average wind speed and current wind speed selection. Measuring Wind Speed and Temperature: Digital anemometer can simultaneously measuring wind speed and temperature.