Lutron ABH-4224 is a CUP ANEMOMETER/BAROMETER/HUMIDITY/TEMP.
Air velocity : 0.9 to 35.0 m/s, ft/min., km/h, mile/h, knots.
Barometer : 10 to 1100 hPa, mmHg, inHg.
Humidity : 10% to 95% RH, Dew.
Temperature : 0 to 50 oC, oC/ oF.
All in one, hand held type.
Cup type probe, no wind direction.
Hold, Record (max., min.).
DC 1.5V battery (UM-4, AAA) x 4.
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