LUTRON ABH-4225

* Air velocity : 0.4 to 30.0 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. 
* Vane probe, high reliability. 
* Hold, Record (max., min.). 
* DC 1.5V battery (UM-4, AAA) x 4.