Air Speed Specification: Range: 0 - 30 m/s, 0 - 90 km/h, 0 - 5860 ft/min, 0 - 65 mph, 0 - 55 knots. Resolution: 0.1 m/s, 0.3 km/h, 19 ft/min, 0.2 mph, 0.2 knots. Threshold: 0.1 m/s, 0.3 km/h, 39 ft/min, 0.2 mph, 0.1 knots. Accuracy: +/- 5%. Air Temperature Specification: Thermometer: NTC Thermometer. Range: Between -10°C and 45°C (between 14°F and 113°F) Storage Temperature: -40°C to +60°C, -40°F to 140°F. Resolution: 0.2°C, 0.36°F. Accuracy: ±2°C, ±3.6°F Current Consumption: Approx. 3 mA Operating Humidity: Less than or equal to 90% relative humidity. Item Size: 105 * 60 * 20 mm Weight: 111 g