The G9407 is widely used in wind speed measurements for HVAC quality control, health ands safety, environmental, petrochemical, navigation, fan manufacturing, exhaust ventilation, sports and others. A compact, pocket-sized anemometer that is easy to use and easy to stow. Keep one handy for whenever you need to take a quick air velocity measurement.The G9407 anemometer is light weight wind speed tester and temperature tester device used in wind speed measurements for HVAC quality control, health and safety, environmental, petrochemical, navigation, fan manufacturing, exhaust ventilation, sports and othersA compact pocket-sized anemometer that is easy to use and easy to stowKeep one handy for whenever you need to take a quick air velocity measurementWind speed modes: MAX, MIN, Real-time Wind count modes: MAX, 2/3 MAX, MIN, AVG, real-time 7 selectable units: m/s, km/h, ft/min, MPH, KNOTS, CFM, CMMWind Speed: Range: 0~30m/s | Resolution: 0.1m/s | Accuracy: +-5%rdg+0.5Temperature: Range: 10~50degC / 14~122degF | Resolution: 0.1degC / 0.2degF | Accuracy: +-2degC / +-4degFWind Scale: Range: Level 0~12 | Resolution: 1 | Accuracy: +-1Work Environment: Temperature: 0~40degC | Humidity: ?80%RHWork Environment: Temperature: 0~40degC | Humidity: ?80%RHStorage Environment: Temperature: -20~60degC | Humidity: ?75%RHStandard Accessories: Operating Manual & AAA 1.5V x 3 batteries