Feature: 1. Multiple Measurements: This device supports wind speed, wind volume, wind power and temperature measurement, dew point and wet bulb temperature measurement, environment temperature and humidity measurement. 2. Multiple Functions: This digital anemometer has data locking function, minimum and maximum value locking, low voltage prompt, and automatic shutdown in about 15 minutes, which is convenient and practical. 3. LCD Display and Units: This digital anemometer features an LCD display with bright backlight, 6 wind speed units of m/s, km/h, knots, ft/s, mile/h, ft/m, 3 air volume units of CMM, CFM and CMS, with ℃ ℉ air temperature units. 4. Applicable Fields: This high accuracy wind speed meter is widely suitable for wind energy, meteorology, industry, navigation, highways, airports, fan manufacturing, ventilation engineering, and other fields. 5. ABS Material: This handheld anemometer is made of excellent ABS material, which has high strength, wear resistance, erosion resistance, and can adapt to various harsh environments with a long service life. Specification: Item Type: Digital Anemometer Maximum Working Height: Approx. 2000m / 6561.7ft Working Mode: Wind Speed Frequency Conversion Display: LCD Display Maximum Display: 9999 Sampling Rate: About 0.4s Auto Power Off: About 15 minutes Battery Undervoltage Indication: LCD Display Symbol Working Current: About 18mA Battery: 3 x 1.5V AAA Battery (Not Included) Resolution: 0.01m/s, 0.1C, 1%RH Working Temperature: -20℃-60℃/+1.0℃, -4℉-140℉/+2.0℉ Dew Point Temperature: -50℃-60℃, -58℉-140℉ Wet Bulb Temperature: -20℃-60℃, -4℉-140℉ Humidity: 0-99%RH/+5%RH (No Condensation Environment) Product Size: Approx. 215 x 83 x 33mm / 8.5 x 3.3 x 1.3in. Package List: 1 x Anemometer 1 x User Manual 1 x Cloth Bag 1 x Screwdriver