Feature:1. USB connect with computer for real time data uploading functions.2. Precisely measuring and it can store up to 50,000 groups of data.3. This meter is a digital anemometer for measuring the wind temperature, humidity, wind speed, and air volume.4. Professional measuring instrument with large LCD screen and backlight, multi-unit switching functions.5. Wind speed unit is switchable: m/s, km/h, mil/h, ft/m, ft/s or knots.6. Area unit is switchable: m2, ft2.7. Temperature unit is switchable: Celsius(°C) or Fahrenheit(°F).8. Air volume unit is switchable: CMS, CMM, CFM.9. This meter has the functions of reading hold, maximum, minimum, etc.Specification:This high-precision digital anemometer can help you measure Air Velocity (wind speed) whether you're flying RC planes, drones, wings, helicopters. It's very useful and widely used in hiking, sailing, drone pilot, ventilation system, etc.Features:USB connect with computer for real time data uploading functions.Precisely measuring and it can store up to 50,000 groups of data.This meter is a digital anemometer for measuring the wind temperature, humidity, wind speed, and air volume.Professional measuring instrument with large LCD screen and backlight, multi-unit switching functions.Wind speed unit is switchable: m/s, km/h, mil/h, ft/m, ft/s or knots.Area unit is switchable: m2, ft2.Temperature unit is switchable: Celsius(°C) or Fahrenheit(°F).Air volume unit is switchable: CMS, CMM, CFM.This meter has the functions of reading hold, maximum, minimum, etc.It has a low battery indicator.Specifications:Material: ABS+TPEm/s(meter per second): 0.80 ~ 30.00 ±(2.0% reading+50 characters)ft/m(feet per minute): 78 ~ 5900 ±(2.0% reading+5 characters)ft/s( feet per second): 1.30 ~ 98.50 ±(2.0% reading+50 characters)km/h(kilometer per hour): 1.40 ~ 108.00 ±(2.0% reading+50 characters)mil/h(miles per hour): 0.90 ~ 67.20 ±(2.0% reading+5 characters)Knots(nautical miles per hour): 0.8 ~ 58.30 ±(2.0% reading+50 characters)Air Temperature: -10 ~ 60°C ±1.5°C/-14 ~ 140°F ±2.7°FAir Relative Humidity: (20 ~ 80)%RH ±3%RH@25°C/(<20 or >80)%RH ±5%RH@25°CResolution: 0.01m/s; 1ft/m; 0.01knots; 0.01km/h; 0.01ft/s, 0.1°C/0.1°F, 0.1%RHCFM: 0 to 99990/0 to 9.999ft2CMM: 0 to 99990/0 to 9.999ft2CMS: 0 to 9999/0 to 9.999m2Work Height: Maximum 2000mWork Mode: Frequency of wind speed conversionDisplay: LCDMaximum Show Value: 9999Sampling Time: About 0.4s/timeFlow Area Setting: YesMAX/MIN Function: YesDisplay Back Light: YesAuto Power Off: Yes°C/°F Selection: YesAmbient, Dew Point & Wet Bulb Temperature Selection: YesLow Battery Indication: YesUSB Interface: YesPower Supply: 1 * 9V 6F22 Battery (NOT Included)Operation Environment: 0°C ~ 40°C, 0 ~ 85%RH(no moisture condensation)Detector (fan) Operation Environment: -20°C ~ 80°C, 0 ~ 95%RH(no moisture condensation)Storage Environment: -10°C~50°C, 0~80%RH(no moisture condensation)Item Size: Approx. 16.5 * 8.5 * 3.8cm / 6.5 * 3.4 * 1.5inItem Weight: Approx. 153g / 5.42ozPackage Weight: Approx. 354g / 12.47ozPackage Size: Approx. 19 * 11 * 6.5cm / 7.5 * 4.4 * 2.6inPackage List:1 * Multifunction Digital Anemometer1 * Portable Bag1 * CD1 * USB Cable1 * User Manual(English)Package List:1 * Multifunction Digital Anemometer1 * Portable Bag1 * CD1 * USB Cable1 * User Manual(English)