The EXTECH 45118 is a waterproof pocket size with Air Velocity, Temperature and Windchill meter Features: Fold up protective housing extends to 9″ for better reach Large dual display of air velocity and temperature Data Hold to freeze most recent display Auto shutoff 15 minutes after last key is pressed Water resistant housing floats and Drop tested to 6 feet Complete with CR2032 lithium battery and lanyard Windspeed: Measures ft/min, MPH, m/s, km/h, Knots and Beaufort Force Selectable averaging function of 5, 10, or 13 second intervals Replaceable non-corrosive plastic wind vane (impeller) Temperature and Windchill: Measures from -18 to 50°C
