Model number: Extech AN25
Pocket-sized heat index anemometer that measures air velocity, heat index, relative humidity, ambient temperature, dew point, wet bulb, and windchill.
Features
Multiparameter sensor (Air velocity, Heat index, WGBT, Humidity, Dewpoint).
Min/Max/Average of (5sec/10sec/13sec).
Data Hold.
CR2032 Battery