?Professional digital anemometer for air velocity and air temperature measurement. Portable size， convenient to carry.<br> <br> Features:<br> Specially designed for air velocity and air temperature measurement.<br> Digital LCD display with backlight， easy to read and ideal for night use.<br> Long press the "MODE/ON" button to turn on the meter.<br> Press the "MODE" button for 3s until "m/s" start to blink， then press"SET" button to select unit.<br> Temperature can be displayed in Celsius(▲C) or Farenheit(▲C).<br> 5 optional units: m/s， ft/min， km/h， knots， mph.<br> Wind speed displays in fan bar graph.<br> Power off automatically to save energy.<br> <br> Specifications:<br> Optional Units: m/s， km/h， ft/min， knots， mph<br> Measurement Range: 0-30m/s， 0-5860ft/min， 0-55knots， 0-90km/h， 0-65mph<br> Measurement Temperature: -10~45▲C / 14~113▲F<br> Power Supply: CR2032 Button Battery(not included)<br> Working Temperature: -10~45▲C<br> Working Humidity: &lt;= 90%RH<br> Item Size: 10 * 4 * 1.5cm / 3.9 * 1.6 * 0.6in<br> Item Weight: 44g / 1.5oz<br> Package Size: 21 * 14 * 2cm / 8.3 * 5.5 * 0.8in<br> Package Weight: 100g / 3.5oz<br> <br> Package List:<br> 1 * Anemometer(battery not included)<br> 1 * User Manual(English)<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>