Meteorological Parameter | Measurement Element | Measurement Range | Accuracy/Resolution (1) Wind Speed | 0--70 m/s | 0.1 m/s | (0.3+0.03V) m/s (2) Wind Direction | 0--360° | 1° | ±3° (3) Atmospheric Temperature | -50--50°C | 0.1°C | ±0.2°C (4) Relative Humidity | 0--100% RH | 0.1% RH | ±3% RH (5) Atmospheric Pressure | 450--1060 hPa | 1 hPa | ±0.5% (6) Power Supply: AA dry batteries (3 pcs) (7) Communication: USB (8) Storage: 40,000 data records (9) Dimensions: 97mm × 28mm × 400mm (10) Weight: Approx. 0.5 kg (11) Operating Environment: -20℃ to 50℃; 5% RH to 95% RH