AZ INSTRUMENT 8909

Features : A simple, hand-held meter for monitoring Wind speed Windchill * relative humidity Dew point Heat index Barometric pressure and upcoming storms. Altitude( Model 8910) 0, -2h, -4h, -8h, -16h bar chart shows the development of air pressure over the last 16 hours, forecast future weather. Records maximum readings. Twin button for multi-functions. Alarm functions are built-in for storm warning feature. Sealed precision thermistor & humidity sensor. Water resistant and shock proof housing. Replaceable lithium battery and impeller. Pocket-knife design makes it convenient. Low battery indication.