Features: <br>The digital multi-function anemometer is a professional instrument for measuring wind speed, temperature, and humidity. <br>It is widely used for wind speed measurement in factory, school, office, traffic, family and many other various occasions. <br>Measuring the wind speed, air volume, temperature and humidity. <br>Measuring wind speed/air volume max/min value function. <br>Air volume 2/3 MAX value, average value measurement. <br>Wind speed/air volume and temperature unit selection function. <br>Measuring wind direction angle function. <br>Designed with USB for connection with computer and real-time measurement. <br>Backlight and data hold function. <br>Low battery indication function. <br>Automatic power on/off setting function. <br> <br> <br>Specification: <br>Model: GT8907 <br>Wind speed measurement range: <br>Unit Wind speed range Resolution Minimum threshold value Precision <br>m/s 0.0~45.0 0.01 0.3 ±3%±0.1 <br>Ft/min 0.0~8800 0.01/0.1/1 60 ±3%±20 <br>Knots 0.0~88.0 0.01 0.6 ±3%±0.2 <br>Km/h 0.0~140.0 0.01 1 ±3%±0.4 <br>Mph 0.0~100 0.01 0.7 ±3%±0.2 <br> <br>Air volume measurement range: <br>CFM: 0~999900 ft3/min <br>CMM: 0~999900m3/ min <br>Unit Range Resolution Area <br>CFM(FT3/MIN) 0~999900 0.001~100 0.001~9999ft2 <br>CMM(M3/MIN) 0~999900 0.001~100 0.001~9999m2 <br>Unit conversion: <br>m/s Ft/min Knots Km/h Mph <br>1m/s 1 196.87 1.944 3.60 2.24 <br>1 ft/min 0.00508 1 0.00987 0.01829 0.01138 <br>1 knot 0.5144 101.27 1 1.8519 1.1523 <br>1km/h 0.2778 54.69 0.54 1 0.6222 <br>1mph 0.4464 87.89 0.8679 1.6071 1 <br>Air temperature: <br>(1) temperature measurement range <br>Unit Range Resolution Accuracy <br>℃ 0~45 0.1 ±1.0℃ <br>℉ 32~113 0.18 ±1.8℉ <br>(2) Humidity measurement range <br>Unit MIN/MAX Resolution Precision Test condition <br>%RH 10-90 0.1 ±5% 90%RH without condensation <br> <br>Working current: <br>Unit Description MIN/MAX TYP Test condition <br>mA Working current 1: 15~20 18 backlight is off <br>mA Working current 2: 20~25 23 backlight is on <br>V Low battery indication 3.5 ~ 4.5 4 <br>uA Power off current 0~8 5 <br>Working environment: <br>Temperature 0~5℃ (32~122℉) <br>Humidity 40~80%RH <br>Storage condition: <br>Temperature -40~60℃(-40~140℉) <br>Humidity ≤80%RH <br>Power supply: 4x 1.5V AAA alkaline batteries (NOT included) <br>Weight: 1214 g / 42.8 oz(approx.) <br> <br> <br>Package list: <br>1 * Anemometer<br>1、The digital multi-function anemometer is a professional instrument for measuring wind speed, temperature, and humidity. <br>2、It is widely used for wind speed measurement in factory, school, office, traffic, family and many other various occasions. <br>3、Measuring the wind speed, air volume, temperature and humidity. <br>4、Measuring wind speed/air volume max/min value function. <br>5、Wind speed/air volume and temperature unit selection function.