Item Type: Pocket Anemometer Product Material: Plastic Weight: Approx. 100g / 3.5oz Temperature Sensor: NTC Negative Temperature Coefficient Resistance Operating Temperature: -10 ~ +45 (14F ~ 113F) Operating Humidity: Less Than 90% RH Storage Temperature: -40 ~ +60 (-40F ~ 140F) 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 ~ +450.22 H14H ~ 113H0.363.6H Wind Speed Measurement UnitMeasuring RangeAccuracyResolution Lowest Starting Point Value m/s0~300.10.15% ft/min0~58601939 knots0~550.20.1 km/h0~900.30.3 mph0~650.20.21Pocket Anemometer Usage: Electric power, steel, petrochemical, energy saving offshore fishing industry, various fan manufacturing industries, industries that require ventilation and exhaust systems, etc. 2Measurement Object: Handheld digital anemometer can measure wind speed, wind temperature, and wind power level. 3Measuring Wind Speed and Temperature: Digital anemometer can simultaneously measuring wind speed and temperature. 4Selection Function: Handheld anemometer has maximum wind speed, average wind speed and current wind speed selection. 5Unit Selection: Portable anemometer has five wind speed units selection of m/s, km/h, ft/min, knots, mph, and and H temperature unit selection. 6Multi Functions: Beaufort scale, LCD backlight display, Manual and automatic shutdown, freeze reminder, low battery prompt. 1 x Anemometer With Hanging Rope&nbsp 1 x Manual