ST6816 LCD Handheld Digital Anemometer Wind Speed Temperature Meter Tester Condition: Item Type: Digital Anemometer Material: ABS Color: As shown in the picture Weight: Approx.312g/11oz Display   LCD,maximum display 9999                                Air speed 0.40~30.00 m/s                        Sampling rate  Approx.Two reading per second          Sensor  Air speed/flow sensor:angled vane arms with bearing                                                 Beaufort Wind scale  0~12    Maximum/Min/Avg  Record and view minimum,maximum,average          Data hold   Freeze reading       Operating conditions   Temperature:0~50°C,Humidity:<80%RH Altitude:<2000M                   Storage conditions   Temperature:-10~50°C,Humidity:<70%RH    Auto power off   10 minutes        Power  3x1.5V AAA(Not included)