Wind speed unit selection: m or s, ft or min, knots, km/h, mph. Wind speed measurement range: 0.3 to 30 m or s Accuracy: 5 percent Temperature measurement range: -10 to 50 oC (14 to 122 oF) Accuracy: 1 degree Celsius Humidity measurement range: 20 percent - -99 percent Accuracy: 5 percent Resolution: 0.1 m or s, 1 percent , 0.1 oC Operating temperature: 050oC (32122oF) Operating humidity: 10 - 90 percent RH Product use: for measuring wind speed, temperature and humidity. Mini Anemometer A variety of wind speed unit selection or large screen backlight display or wind speed level display or automatic shutdown Applicable to multiple scenarios Applicable to energy electric, steel, petrochemical, energy saving, fishing, various fan manufacturing industries, etc. The blades of the six-wheel fan are sensitive Fine wind can also be detected and the measurement is more accurate Simultaneous wind speed and wind measurement Can test a variety of functions, convenient and fast Different wind speed units A variety of wind speed units, press "Units" to switch LED backlit display Easy to read measurements in bright light and at night Automatic sleep mode 10 minutes without any operation, the machine will automatically turn off If "battery model" appears on the screen, it means the battery is too weak and needs to be replaced Good quality product