Check the listing for details. Pro HVAC Anemometer Handheld CFM Meter Wind Speed Meter with USB Data Export PC. Condition: New. Listed at 41.99 USD. ⚡【High Precision Anemometer】Wind Speed Range: 0.001~100 mph (Accuracy: +/- 3%+0.2 rdg),0.001~45m/s (Accuracy: +/- 3%+0.1 rdg); Temp Range:32~113℉;Resolution: 0.001 mph.Measure wind speed in MAX/MIN/Current.Display in 5 units: m/s, km/h, ft/min, knots, mph. wind temp in ℃/℉ , air flow in CFM CMM. Average of wind velocity, wind flow reading . 🎯【Extensible Replacable Wind Sensor】Extra long 79 inch extensible USB cable, telescopic rod, thread hole on the back of the wand, makes this portable HVAC CFM tester possible to reach higher measured spot, free you hand from long-time holding during continuous windspeed / airflow monitor by simply mounting on tripod. ⚡【Pro Airflow CFM Meter】Wind flow range: CFM 0-999900 ft3/min, Resolution: 001-100, Wind flow area 0.001-9999 ft2,Wind Flow Calculate.