Check the listing for details. Anemometer Digital Wind Speed Meter Gauge Air Wind Flow Humidity USB PC Connect. Condition: New. Listed at 61.89 USD. Product Description: 【Portable HVAC CFM Anemometer】 This wind velocity meter can measure Wind Speed, wind temperature, wind flow, relative humidity(RH) and dew point. With USB to computer data log and Max/Min/Avg/ 2/3Max of wind velocity 【High Accurate Anemometer】Wind Velocity range 0.3~40m/s, +/- 2.0% of reading + 50, display in 5 units: m/s, km/h, ft/min, knots, mph; Wind Temp Range 14°F～140°F, +/- 2.7 °F display in 2 units ℃℉Celsius,Fahrenheit; Wind flow range 0~9999 ft3/min 【USB Data Logging】With a metal screw hole in the bottom so you can mount it on a tripod for hands-free operation. Support to connect it to computer via USB port,to monitor and record wind speeds, temperature, cfm data and RH, work great with CFM air flow measuring, HVAC duct tasks 【Portable Anemometer】 It's a light weight pocket size wind speed indicator comes with case, makes it portable for indoor and outdoor activities,such as: Long range shooting,Boat Sailing, Kite flying, Climbing, Drone driving,Vent, turbine air flow testing etc. 【Sensitive Anemometer】Built with sensitive 8 vans to measure low winds down to 0.01 m/s, km/h, ft/min, knots, mph. Also with Backlight Screen, Low battery indicator, 365 days quality assurance. Function: Wind speed Temperature Humidity Dew point Backlight Data Hold Max/Min/Avg ℃/℉ selection Manual /Auto power off Wind chill indication Barometer indication Low battery indication USB connect to PC Wind speed unit selection Highly accurate and responsiv Specification: Wind speed range: 0.3-30 m/s, 0.67 ~ 67.1 mphTemperature range: -10℃-45℃,14℉-113℉Relative humidity: 5-95%Dew point: 0-50℃,32℉-122℉Accuracy of wind speed: +/- 5% of readingsAccuracy of temperature: +/- 2℃,35.6℉Resolution:0.2 mph,32.36℉,0.1%RH Package Included: 1 x Digital anemometer (doesn't include batteries)1 x User manual1 x Protective bag1 x USB cable1 x Lanyard Notice: The standard package doesn't include batteries. Because, the international air shipping forbid to ship liquid,powder and batteries,we can not put them in the package box. Hope you can understand buy them in your local store or supermarket.Thanks for your support!