Lutron AH-4223 Vane Anemometer/RH/Temp

\nVANE ANEMOMETER/HUMIDITY/TEMPERATURE\nModel : AH-4223\n* Air velocity : 0.4 to 30.0 m/s, \n ft/min., km/h, mile/h, knots.\n* Humidity : 10% to 95% RH, Dew.\n* Temperature : 0 to 50 °C, °C/°F.\n* All in one, hand held type.\n* Vane probe for anemometer.\n* Hold, Record ( max., min. ).\n* DC 1.5V battery ( UM-4, AAA ) x 4.\n