Item Type: Pocket Anemometer _x000D_Product Material: Plastic_x000D_Weight: Approx. 100g / 3. 5oz_x000D_Temperature Sensor: NTC Negative Temperature Coefficient Resistance_x000D_Operating Temperature: -10 ~ +45 (14F ~ 113F)_x000D_Operating Humidity: Less Than 90% RH_x000D_Storage Temperature: -40 ~ +60 (-40F ~ 140F)_x000D_Battery: 1 x CR2032 Button Cell (Shipped Without Battery)_x000D_Measurement Object: Wind Speed, Wind Temperature, And Wind Power Level_x000D_Product Size: Approx. 104. 3x57. 8x19. 9mm / 4. 1x2. 3x0. 8in_x000D_Function:_x000D_1. Wind Speed Units And Measurement Mode Settings;_x000D_2. Temperature Unit Setting;_x000D_3. Backlight;_x000D_4. Measurement;_x000D_Wind Temperature Measurement_x000D_UnitMeasuring RangeResolutionAccuracy_x000D_-10 ~ +450. 22_x000D_14 ~ 1130. 363. 6_x000D_Wind Speed Measurement_x000D_UnitMeasuring RangeAccuracyResolution Lowest Starting Point Value_x000D_m/s0~300. 10. 15%_x000D_ft/min0~58601939_x000D_knots0~550. 20. 1_x000D_km/h0~900. 30. 3_x000D_mph0~650. 20. 2 1Pocket 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 temperature unit selection. 6Multi Functions: Beaufort scale, LCD backlight display, Manual and automatic shutdown, freeze reminder, low battery prompt.