Item Type: Anemometer Model: MS6252A Material: ABS Color: Orange Battery: 1 x 6F22 9V (battery not included) Purpose: wind speed, gas flow rate measurement Wind Speed Measurement UnitMeasuring Range ResolutionMarginal Value Accuracy m/s0~300.010.35%0.1 ft/min0~58601.968605%20 knot0~550.0190.65%0.2 km/h0~900.03615%0.4 mph0~650.0220.75%0.2 Wind Temperature Measurement UnitMeasuring RangeResolutionAccuracy C -10~+450.12 14~1130.23.6 Temperature SensorNegative Temperature Coefficient Operating Temperature -10~+45(14~113) Operating HumidityNo more than 90%RH Storage Temperature -10~+50(14~122) Power ConsumptionAbout 6mA Wind Flow Range CMM: 0-999900m3/min CFM: 0-999900ft 3/min UnitRangeResolutionInterval CFM(FT3/MIN)0-9999000.001-1000.001-9999 CMM(M3/MIN)0-9999000.001-1000.001-9999