Demo/Review of the Extech RH300 Digital Psychrometer - Jon-Don Video

http://www.jondon.com/thermo-hygromet... The Extech RH300 measures relative humidity (0-100%), wet bulb, dew point (-90.4°F to 122°F), and air temperature (-4°F to 122°F). It offers Data Hold fuctions, Min/Max readings, and Auto Power Off. The unique sensor cap design lets you simply twist the cap to close and protect the sensor during storage. For more information on the Extech RH300 Digital Psychrometer and other high-quality moisture detection equipment, visit http://www.jondon.com or call 800-400-9473.