High Accuracy Handheld Wind Meter 866B Thanks to the sensitive dual temp sensors, 8 vanes, smooth fan shaft, this 866B Pro Anemometer can accurately detect wind speed and temperature. Easy CFM calculation: Air Flow in CFM (Q) = Flow Velocity in Feet Per Minute (V) x Duct Cross Sectional Area (A) HOLDPEAK 866B-APP with wireless bluetooth connect to Phone Function HOLDPEAK 866B Without Phone App Function (Basic Model) HoldPeak 866B Digital Anemometer Handheld Wind Speed Meter for Measuring Wind Speed, Temperature and Wind Chill with Backlight and Max/Min.
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