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 Display: LCD Display Wind Speed : 0.4～30m/s 1.4～108km/h 0.7～58knots 0.8～67mph 78～5905ft/min Wind Speed Unit: m/s ft/min mph km/h Knots Wind Scale: 0～12 Accuracy: ±1 Temperature : -10～50°C / 14～122°F Resolution: 0.1°C / 0.2°F Accuracy: ±2°C / ±4°F Auto Power Off: 5min Sampling Rate: 0.5s Overload Indication: OL Altitude: Max.2000m Pollution Level: 2 Operating Temperature: 0°C～40°C(≤80%RH) Storage Temperature: -20～60°C(≤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)