Hong Yu TM840M Tecman Digital Measurement Anemometer Wind Speed 0-30M/Sec

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Hong Yu digital anemometer is your answer for the perfect tool to measure wind flow. Whether on an open field or in an air duct, it will show an accurate numbers of the speeds and temperature of the wind. It can operate at as lowest at -10^oC until 45^oC. One 9V PP3 battery is all that is needed to power this convenient tool.