HABOTEST HT625B Handheld Digital Anemometer Wind Speed Meter Gauge Accurately Measure Wind Temperature Air Volume and Dew Point with MAX/MIN/AVG Backlight LCD Screen for Sailing Surfing Fishing This is a professional digital anemometer with stable performance, safe and reliable. It cab measur wind speed，air vilume，temperature and humidity. Widely used in wind energy, meteorology, industry, agriculture, hydrology and water conservancy, enviromental protection, highways, airports, etc. Features: Multiple Measure Mode --- Air velocity and air flow measurement, Wind Temperature Humidity and Dew Point measurement, you can measure wind speed, air flow, wind temperature and humidity for analysis of critical environment conditions. High Accuracy Measurement --- Wind Speed Meter can accurately measure wind speed in 5 units: m/s, km/h, ft/min, knots, mph. Range 0.9-67.1mph, Accuracy ±2.0%. And Wind Temp in ℃/℉, range -20℃-60℃(-4℉-140℉)，Accuracy ±1.5℃.When measuring the wind speed, you can also see the Beaufort Wind Scale on the display, and which range is 0-18. Multifunction Anemometer --- Data Hold Function, can hold the reading; MAX/MIN/AVG Function, it will show the highest/lowest/average reading on the display; Manual / Auto Power OFF optional; Low battery indication; USB port for connetct computer. Handheld LCD Color Screen Meter --- This Wind speed gauges equipped a LCD color screen with backligh, can reading better and clearer both under sun or in dark. Compact and lightweight, you can keep it in pocket. Versatile Use --- The anemometer is ideal for home purpose such as measuring wind speed, air blower, temperature of CPU computer fans, and also can be used for windsurfing, sailing, fishing and kite flying. Suitable for power industry, steel industry, petrifaction industry, manufacturing industry, etc. Specifications: Material: ABS Type: A/B(optional) Color: Red+Black Display: LCD with backlight, MAX display 9999 Air velocity: 0.40-30.00m/s Sampling rate: about 1 r/s Sensor:      Air velocityflow sensor: angled vane arms with bearing      Temperature and Humidity Sensor: precision sensor Beaufort wind scale: 0-12 Max/Min/Avg: Record and view minimum,maximum,average Data holder: Freeze reading Ambient: -20.0°C-60.0°C(-4.0°F-140.0°F) Humidity: 5.0%-95.0%RH Wet Bulb Temperature: -20.0°C-60.0°C(-4.0°F-140.0°F) Dew Point Temperature: -50.0°C-60.0°C(-58.0°F-140.0°F) Accuracy: ±1.5°C，±4.0%RH Working eviroment: Temp 0-40°C，humidity<80%RH, Altitude<2km Strage condition: Temp -10-50°C, humidity<80%RH Auto power off: 10 minutes Power: 3 x 1.5V AAA(LR03) battery(not include) Item Size: 19.7*6*3.3cm/7.8*2.4*1.3in Item Weight: 137g/4.8oz Package Weight:     A: 272g/9.6oz     B: 305g/10.8oz Package Size:22.9*11.5*4.8cm/9.0*4.5*1.9in Package List: 1 * Wind Speed Meter(battery not include) 1 * USB Cable 1 * CD 1 * Manual 1 * Storage Bag