we are offering Digital Anemometer.Simultaneous display air velocity and temperatureData hold and auto power offContinuous moving air velocity averaging of measurements for up to 2 hoursDisplays Min/Max/Avg velocity with temperature valuesMulti-point averaging up to 8 pointsCalculate average velocity values in secondsHigh-contrast, 4 digit LCD readoutRS-232 interfaceIncludes hard carrying case and batteriesSPECIFICATIONS:Air VelocityRange Resolution80 to 5900 fpm 1 fpm0.4 to 30.0 m/s 0.1 m/sTemperatureRange Resolution14 to 122F 0.1F-10 to 50C 0.1CAccuracy 2F / 1CPower Supply Single 9V batteryDimensions 7.1 x 3 x 1.8