Extech RH401 Psychrometer IR Temperature and Humidity Meter is designed to measure air temperature, RH, surface temperature, dew point, and wet bulb. The Extech RH401 features an 8:1 distance to spot ratio, laser guide for improved aiming, retractable humidity capacitance sensor for safe storage and transportation, and simultaneous display of various sets of three measurements.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
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