Made of fine quality material, practical, easy to operate and use, wide application range, has a long service life. Features: Measurement of wind speed, air volume and temperature. Wind cold indicator. It has a low battery indicator and data hold function. Switch wind speed units (mph, km/h, m or s, ft or min, knot). Real-time measurement of wind speed and average wind speed. Measurement of maximum wind speed and minimum wind speed. Switch between Fahrenheit and Celsius unit. Timed automatic shutdown (automatic shutdown after 10 mins of no button operation). With LED light for easy use in dark environments. Widely used in electric power, meteorology, iron and steel, petrochemical, energy saving and other industries. And it is also suitable for sailing, rowing, heating, ventilation, air conditioning, agriculture, sea fishing industry, all kinds of fan manufacturing, the need for exhaust system industry and so on. Specification: Material: ABS Color: black, blackandred (optional) Units: CFM, CMM, or , mph, km/h, m or s, ft or min, knot Wind velocity measurement: Measurement range: m or s: 0-30 ft or min: 0-5860 knot: 0-55 km/h: 0-90 mph: 0-65 Resolution: m or s: 0.01 ft or min: 1.968 knot: 0.019 km/h: 0.036 mph: 0.022 Threshold: m or s: 0.3 ft or min: 60 knot: 0.6 km/h: 1 mph: 0.7 Accuracy: m or s: 5 percent 0.1 ft or min: 5 percent 20 knot: 5 percent 0.2 km/h: 5 percent 0.4 mph: 5 percent 0.2 Wind flow range: CMM: 0-999900m or min CFM: 0-999900ft or min Range: CFM (FT or MIN): 0-999900 CMM (M or MIN): 0-999900 Resolution: CFM (FT or MIN): 0.001-100 CMM (M or MIN): 0.001-100 Area: CFM (FT or MIN): 0.001-9999 CMM (M or MIN): 0.001-9999 Wind temperature measurement: Measurement range: : -10-and45 : 14-113 Resolution: : 0.1 : 0.2 Accuracy: : 2 : 3.6 Battery: 1 x 9V battery (not included) Temperature sensor: negative temperature coefficient resistance Operating temperature: -10-and45 (14-113) Operating humidity: less than 90 percent RH Storage temperature: -10-and50 (14-122) Current consumption: about 6mA Item size: 165 x 85 x 39mm or 6.5 x 3.3 x 1.5in Item weight: 148g or 5.2ounce Package size: 175 x 125 x 50mm or 6.9 x 4.9 x 2.0in Package weight: 240g or 8.5ounce Package list: 1 x Anemometer 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.