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> Press the "UNIT" button， the unit indicator will blink; press the "SELECT" button to change units; press the "UNIT" button again to confirm the unit you want.<br> 5 optional units: m/s， ft/min， km/h， knots， mph.<br> Display the max， min and average value.<br> Power off automatically after 1 minute.<br> <br> Specifications:<br> Optional Units: m/s， km/h， ft/min， knots， mph<br> Measurement Range:<br> <br> Working Temperature: -10°C ~ 50°C<br> Working Humidity: 40% ~ 85%<br> Power Supply: 9V Battery (not included)<br> Item Size: 13 * 7 * 3cm / 5.1 * 2.8 * 1.2in<br> Item Weight: 255g / 9oz<br> Package Size: 25 * 21 * 5.5cm / 9.8 * 8.3 * 2.2in<br> Package Weight: 703g / 24.8oz<br> <br> Package List:<br> 1 * Anemometer(1*Host， 1*Fan)<br> 1 * Case<br> 1 * User Manual(English)<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>