High-precision mini-anemometer: Accurately measure wind speed between 0.3 and 30 m / s ( 5% of radiation speed), with a resolution of 0.1 m / s; 0.1, 20% - 99% and air cooling can achieve high precision and real-time measurement. Multifunction multimeter: Measure wind speed, wind chill indicator, wind temperature; the backlit display makes it easy to read even in the dark. The AP AP-816B Multifunctional Digital Anemometer can be used not only for outdoor activities, such as shooting, sailing, mountaineering, but also for testing electrical equipment (such as HVAC equipment and the search counters), from navigation to aerial surveillance. Intell Plus Lighter and Portable Small and light, easy to carry; automatic / manual shutdown; / , unit selection of wind speed m / s, ft / min, knots, km / h, mph, high precision pressure sensor.