Air Velocity and Temperature Measurement Max, Average, and Current Air Velocity Measurement Temperature Unit Selection Five Air Velocity Units: M/s, Km/h, ft/min, Knots, mph Beaufort Scale Backlight Display Manual and Auto Power Shut-Off Wind Chill Indication Low Battery Indication Measuring Items: Air Velocity (Wind Speed), Air Temperature Air Velocity Range: 0–30 m/s, 0–90 km/h, 0–5860 ft/min, 0–55 knots, 0–65 mph Air Velocity Accuracy: ±5% Air Temperature Range: -10°C to 45°C Air Temperature Accuracy: ±2°C Air Velocity Resolution: 0.1 m/s Temperature Resolution: 0.2°C Battery: CR2032 (not included) Thermometer Type: NTC Operating Temperature: -10°C to 45°C Operating Humidity: Less than 90% RH Storage Temperature: -40°C to +60°C Current Consumption: Approx. 3 mA Weight: 52g