Handheld Digital Anemometer Pocket Wind Meter Handheld Mini Wind Speed Temperature Power Gauge with Digital LCD Display Item Type: Pocket Anemometer Product Material: Plastic Weight: Approx. 100g / 3.5oz Temperature Sensor: NTC Negative Temperature Coefficient Resistance Operating Temperature: -10℃ ~ +45℃ (14°F ~ 113°F) Operating Humidity: Less Than 90% RH Storage Temperature: -40℃ ~ +60℃ (-40°F ~ 140°F) Battery: 1 x CR2032 Button Cell (Shipped Without Battery) Measurement Object: Wind Speed, Wind Temperature, And Wind Power Level Product Size: Approx. 104.3x57.8x19.9mm / 4.1x2.3x0.8in Function: 1. Wind Speed Units And Measurement Mode Settings; 2. Temperature Unit Setting; 3. Backlight; 4. Measurement; Wind Temperature Measurement Unit Measuring Range Resolution Accuracy ℃ -10℃ ~ +45℃ 0.2 ±2℃ ℉ 14℉ ~ 113℉ 0.36 ±3.6℉ Wind Speed Measurement Unit Measuring Range Accuracy Resolution Lowest Starting Point Value m/s 0~30 0.1 0.1 ±5% ft/min 0~5860 19 39 knots 0~55 0.2 0.1 km/h 0~90 0.3 0.3 mph 0~65 0.2 0.2