R-tek Digital Anemometer Wind-Speed Gauge Meter LCD Handheld Airflow Digital Anemometer

Specifications: • Operating temperature: 0° - 45°C (32°F - 113°F) • Operating humidity: 40%RH~85%RH • Store temperature: -20°C~60°C (-4°F~140°F) • Store humidity: 10%RH~90%RH • Battery: 9V • Size: Main device:(145×72×35) mm • Fan: ( 1 7 2×65×29) mm • Weight: 276g (including battery) • Accessories: Carrying case, manual • Wind Speed Range M/s = 0-45 Ft/min = 0-8800 Knots = 0-88 Km/hr = 0-140 Mph = 0-100