Features HD LCD SCREEN: The digital anemometer adopts LCD screen with high definition backlight design, clear and bright, making it easy to use at night. 6 BLADE WHEEL: This wind speed meter adopts 6 blade wind wheel and low friction bearing design, ensuring sensitive measurement and stable data. MULTIPLE USAGES: This anemometer can be used for measuring wind speed and temperature at air outlet, fan, or outdoor, convenient and practical. PROTECT COVER: Equipped with a protect cover with non slip design, can better protect the anemometer, suitable for indoor and outdoor use. CONVENIENT USE: The anemometer is powered by 2 button batteries, for long endurance, equipped with a lanyard at the bottom for easy carrying. Specification: Item Type: Wind Speed Meter Material: ABS Wind Speed Specification: Range: 0-30m/s, 0-90km/h, 0-5860 ft/min, 0-65mph, 0-55 Knots Resolution: 0.1m/s, 0.3km/h, 19ft/min, 0.2mph, 0.2 Knots Threshold: 0.1m/s, 0.3km/h, 39ft /min, 0.2mph, 0.1 Knots Accuracy: ±5% Air Temperature Specification: Temperature: NTC Temperature Gauge Range: -10℃-45℃ (14℉-113℉) Storage Temperature: -40-60℃, -40-140℉ Resolution: 0.2℃, 0.36℉ Accuracy: ±2℃, ±3.6℉ Current Consumption: About 3mA Operating Humidity: ≤ 90%RH Battery Type: 2 x CR2030 Button Battery (including battery) Battery Capacity: Single 150mAh Package List:1 x Digital Anemometer2 x Matching Battery2 x User Manual1 x Screwdriver1 x Lanyard1 x Protect Cover Package List 1 x Digital Anemometer 2 x Matching Battery 2 x User Manual 1 x Screwdriver 1 x Lanyard 1 x Protection Cover