RZ818 Mini Anemometer 1. Ideal tool for windsurfing, sailing, fishing, kite flying and mountaineering, or for industrial and household purposes. 2. Computer fan temperature CPU, fan. 3. The LED taillight design can achieve low illumination operation. 4. Read the currentmaximumaverage wind speed. 5. Five units of air speed: ms, Kmh, ftmin, knots, mph. 6. Powered by the built-in 3V CR2032 battery. 7. Small size, light weight and portable. Wind speed specifications: 1. Range: 0-30 ms, 0-90 kmh, 0-5860 ftmin, 0-65 mph, 0-55 knots. 2. Resolution: 0.1 ms, 0.3 kmh, 19 ftmin, 0.2 mph, 0.2 knots. 3. Threshold: 0.1 ms, 0.3 kmh, 39 ftmin, 0.2 mph, 0.1 knots. 4. Accuracy: +- 5%. Temperature specifications: 1. Range: -10 degrees Celsius to 45 degrees Celsius (between 14-113 degrees Fahrenheit) 2. Storage temperature: -40-+60 degrees Celsius, -40-140 degrees Fahrenheit 3. Resolution: 0.2 degrees Celsius, 0.36 degrees Fahrenheit 4. Accuracy: +-2 degrees Celsius, +-3.6 degrees Fahrenheit 5. Current consumption: about 3mA 6. Working humidity: relative humidity is less than or equal to 90%. 7. Item size: 49 x 21 x 112.1mm 8. Weight: 98 grams