Certification:CE,FCC,RoHS Item Type:WIND SPEED METER Origin:Mainland China Model Number:FSJ8918-1 Pocket Humidity Anemometer Welcome to check the Features , Application, Specification, AZ 8918 Knife Shape Pocket Type Mini Wind Speed Meter with Humidity as follows Features : AZ 8918 RH percent Mini Wind speed Meter features: x Small, compact design x Display air velocity and temperature or temperature and windchill x Wind speed units switchable KNT (knot), BF (beau fort), FPM (feet per minute), MPH (mile per hour), MPS (meter per second), KPH (kilometer per hour) x Water-resistant and shock proof x Tripod mountable x Measure relative humidity and dew point Application : Application of 8918 AZ RH percent air flow measuring devices: The pocket size 8918 AZ Air flow Meter has the Swiss knife shape, which could be opened with 90 degree on the tripod, or 180 degree fully opened to handle easily. The pocket-knife design makes it convenient and portable, easy to use and to get a precision reading. The 8918 AZ wind speed meter can measure the Wind Speed, Windchill, Temp., Humidity and Dew point temperature. The Windchill temperature is referred to as the "feels like" temperature. It is based on the rate of heat loss from exposed skin caused by the effects of wind and cold. As the wind increases, the body is cooled at a faster rate causing the skin temperature to drop. Wind Chill does not impact inanimate objects like car radiators and exposed water pipes, because these objects cannot cool below the actual air temperature. The 8918 AZ Windchill Anemometer is the best choice as the wind speed monitoring device in HVAC (Heating, Ventilation and Air Conditioning), industrial related application, Agriculture and Outdoor Activities. The 8918 AZ Anemometer was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.