This LCD Digital Anemometer is portable and useful for measuring Air Velocity (wind speed) and temperature. It is easy to read value at night due to the LCD display with backlight. Features: LCD display with backlight, easy for reading. Split Type Design: the segmentation of the measurement points and reading points with retractable spring, can increase the measuring efficiency. 2 Measuring Types: can measure wind speed and temperature. Switchable Temperature Unit: Celsius(C) or Fahrenheit(F). 3 Value Measurements: MAX/MIN/AVG. 5 Convertible Wind Speed Units: m/s, ft/min, mph, km/h, or Knots. Additional Functions: data hold, low battery indication and overload indication. Wind Scale Indication: the wind scale is from 0 to 12. Auto Power Off: it will power off automatically without operation in 5 minutes. Voltage Stability Control Technology: adopts the voltage stability control technology for lower power consumption. Compact Size and Light-weight: you can hold and carry it conveniently. Widely used in the application of sea sport competition, wind power, marine industry, exhaust fans, air-conditioning, etc. Specifications: Brand Name: UNI-T Color: Black + Red Material: ABS Plastic Display: LCD Display Wind Speed Range: 0.430m/s, 1.4108km/h, 0.758knots, 0.867mph, 785905ft/min Wind Speed Unit: m/s, ft/min, mph, km/h, Knots Wind Scale: 012 Accuracy: 1 Temperature Range: -1050C / 14122F Resolution: 0.1C / 0.2F Accuracy: 2C / 4F Auto Power Off: 5min Sampling Rate: 0.5s Overload Indication: OL Altitude: Max.2000m Pollution Level: 2 Operating Temperature: 0C40C(80%RH) Storage Temperature: -2060C(75%RH) Power Supply: 3 * 1.5V AAA Batteries (Not Included) Item Size: Approx. 12 * 5.1 * 2.7cm / 4.72 * 2.01 * 1.06in Item Weight: Approx. 212g / 7.48oz Package Size: Approx. 27.6 * 15.7 * 5.4cm / 10.87 * 6.18 * 2.13in Package Weight: Approx. 337g / 11.89oz Package List: 1 * Digital Anemometer 1 * User Manual(English)