Technical data: Display type: backlit LCD Tripod thread size: 1/4" (6.35 mm) Temperature measurement range: -10~ +45°C Temperature measurement accuracy: ±2°C Measurement units: m/s, ft/min, knots, km/h, mph, Beaufort scale,°C, °F Air velocity measurement range: 0~30 m/s, 0~5860 ft/min, 0~55 knots, 0~90 km/h, 0~65 mph Air speed accuracy: ±5% ±0.1 m/s, ±5% ±20 ft/min, ±5% ±0.2 knots, ±5% ±0.4 km/h, ±5% ±0.2 mph Initial measurement threshold: 0.3 m/s, 60 ft/min, 0.6 knots, 1 km/h, 0.7 mph Storage temperature: -40/+60 °C Power supply: 3x1.5V AAA The DEDRA MC0957 wind speed meter is a tool that finds applications in the energy, meteorology, shipping, construction, among others, industries, as well as in fields related to safety and extreme sports. Features of the DEDRA MC0957 wind speed meter: Low battery indicator - control of the device's operating time Data Hold - freezes the current measurement Wind Chill - if the temperature of the air flowing through the sensor drops below 0°C, the device will display information that the wind chill factor was taken into account during the temperature measurement High measurement memory - up to 1000 records Automatic data recording mechanism eliminating the need for manual recording Automatic shut-off [10 min] - saves batteries Complete set: Wind speed meter (1 pc) Batteries (3xAAA) User manual **