1This measuring instrument with largescreen LCD and backlight, multiunit switching functions. 2This meter has the functions of data holding, low battery indicator, maximum, minimum, etc. 3Large range measurement, suitable for measurement in a variety of environments, such as outdoors, fishing, Sailing, etc 4High accuracy wind speed measurement, ABS material, durable and easy to use. 5This digital Anemometer is designed to be portable, delicate, compact and easy to carry. Item Type: Anemometer Model: MT62 Material: ABS Battery: 1 x 6F22 9V (Battery Not Included) Application: Wind speed, airvelocity measurement Wind Speed Measurement Unit Measuring Range Resolution Critical Value Accuracy m/s 0~30 0.01 0.3 5%0.1 ft/min 0~5860 1.968 60 5%20 knot 0~55 0.019 0.6 5%0.2 km/h 0~90 0.036 1 5%0.4 mph 0~65 0.022 0.7 5%0.2 Wind Temperature Measurement Unit Measuring Range Resolution Accuracy -10~+45 0.1 2 14~113 0.2 3.6 Temperature Sensor Negative Temperature Coefficient Operating Temperature -10~+45(14~113) Operating Humidity No more than 90%RH Storage Temperature -10~+50(14~122) Power Consumption About 6mA Wind Flow Range CMM: 0-999900m^3/min CFM: 0-999900ft^3/min Unit Range Resolution Area CFM(FT^3/MIN)