Digital Anemometer with LCD Display Wind Speed and Temperature Meter Gauge Handheld Measuring Tool for Sailing Surfing Shooting Drone Item Type: Digital Anemometer Material: Plastic Weight: Approx. 150g/5.3oz Product Size: Approx. 160x52.5x35.5mm/6.3x2.1x1.4in Application: Electric power, steel, petrochemical, energy saving fishing industry, all kinds of fan manufacturing, need to exhaust wind system and other industries Function: 1. Setting of wind speed unit and measurement mode 2. Temperature unit setting 3. Backlight 4. Measurement Battery: 6F22 battery x 1, 9V (shipped without battery) Temperature Sensor: NTC negative temperature coefficient resistor Operating Temperature: minus10℃ to 45℃(14°F to 113°F) Operating Humidity: less than 90%RH Storage Temperature: minus40℃ to 60℃(minus40°F to 140°F) Wind Temperature Measurement: minus10℃ to 45℃, 0.2 resolution, ±2℃ accuracy 14°F to 113°F, 0.36 resolution, ±3.6℉ accuracy Wind Speed Measurement (±5%): 0 to 30m/s, 0.1 accuracy, 0.1 minimum starting point of resolution 0 to 5860ft/min, 19 accuracy, 39 minimum starting point of resolution 0 to 55knots, 0.2 accuracy, 0.1 minimum starting point of resolution 0 to 90km/h, 0.3 accuracy, 0.3 minimum starting point of resolution 0 to 65mph, 0.2 accuracy, 0.2 minimum starting point of resolution