Mini multi-function digital anemometer Product marks: Measurement of wind speed, temperature and humidity Selection of wind speed units: m/s, ft/min, knots, km/h, mph Beaufort scale White backlit display < li>OC/oF unit conversion Max/Min/Avg reading function data hold function Wind chill index reminder function low battery warning Automatic shutdown Calibration function Five measurement units m/s, ft/min, knots, km/h, mph Multi-function Wind speed measurement, temperature measurement, automatic shutdown, unit conversion, C/F, white backlight Application Perfect accessory for cycling, traveling, hiking, camping and other outdoor activities. Low power consumption, with low battery indicator , the display will automatically turn off to save energy precision anemometer anemometer used to measure wind speed range 0.3 ~ 30m/s, air volume range 0-999900m3/min, wind temperature range -10 ~ 50C (14 ~ 122F), humidity range10 ~ 90% RH LCD backlightProfessional measuring instrument with large LCD and backlight for easy reading in the dark. An anemometer is a device that rotates into the wind and then calculates the wind speed based on the rotation speed If you have any questions, please send us an email. We will try our best to answer your questions. Product use: Used to measure wind speed, temperature and humidity. Product parameters: Wind speed measurement range: from 0.3 to 30 m /s Accuracy: 5% Temperature measurement range: -10 to 50oC (14 to 122oF) Accuracy: 1 degree Celsius Humidity measurement range: 20% - -99% Accuracy: 5% Resolution: 0.1 m/s, 1%, 0.1oC Operating temperature: 0 to 50oC (32 to 122oF) Operating humidity: 10 to 90% relative humidity Storage temperature: -10 to 60oC (14 to 140oF) Storage humidity: 10 to 75% RH Size: 110*45*20mmPackage Quantity: 1 piece