Feature 1This digital anemometer adopts magnetic sensitive technology and precise operational amplifier chip, more accurate and high sensitive 25 wind speed unit conversion: m/s, ft/m, mph, km/h, Knots; 2 wind temperature unit conversion: / 312 wind levels indication you don't need to make complicated conversion from value to wind scale 4With backlight for easy reading at darkness. 5With overload indication and data hold functionSpecificationDescription: This digital anemometer is great to measure wind speed and wind temperature. LCD screen displays the measuring value at Max./ AVG. Widely used to measure wind speed for electric fan at home, office, car, air condition, exhaust fan, sailboat and navigation. Features: This digital anemometer adopts magnetic sensitive technology and precise operational amplifier chip, more accurate and high sensitive. 5 wind speed unit conversion: m/s, ft/m, mph, km/h, Knots; 2 wind temperature unit conversion: /. 12 wind levels indication you don't need to make complicated conversion from value to wind scale. With backlight for easy reading at darkness. With overload indication and data hold function. Specifications: Condition: 100% Brand New Mode Number: UT363 Material: Plastic Color: Red + Black Power Supply: 3 x AAA Batteries (not included) Size(L x W): approx. 16 x 5cm / 6.30 x 1.97inch Weight: approx. 145g Function Range Resolution Accuracy Note Wind Speed Measurement 0~30 m/s 0.1 m/s (5% rdg + 0.5) Temperature Range -10~+50 0.1 2 Wind Scale 14~122 0.2 4 Wind scale only for reference Level 0~12 Level 1 1 Sample Rate 0.5second 0.5secondrefresh Overload Indicator OL display "OL" Max./AVG. Measurement MAX. / AVG. Display "MAX/AVG" Data Hold HOLD Display "HOLD" Unit Shift Speed:m/s, ft/m, mph, Km/h, Knots, Temperature:, Backlight BL Manually turn on/off Auto Power off