Extech RH305 Digital Psychrometer Kit includes: RH300 Digital Psychrometer, external temperature probe, 33% to 75% calibration bottles and carrying case.
RH305 includes RH300, temperature probe, 33% and 75% calibration bottles, and carrying case
Auto power off to save battery life
Max/Min readings
Data Hold freezes current reading on display
Switchable F/C temperature units with 0.1 resolution
Unique sensor cap design twists to closed position for protection during storage
External Probe (Temperature) using optional probe (TP890) and T-2 Dew Point
Calculates T1-T2 differential (Air Temperature minus
Wet bulb measurements without slinging
Simultaneous display of % RH, Temperature and Dew point or Wet Bulb or Probe Temperature
Specifications:
Extech RH305 Digital Psychrometer Kit
Accuracy:
1F (0.6C); 0 to 100%RH (3%RH)
Sensor Type:
Capacitance
Dew Point Range:
-90.4 to 122°F (-68.0 to 49.9°C)
Wet Bulb Range:
-6.9 to 122°F (-21.6 to 49.9°C)
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 www.P65Warnings.ca.gov.
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 
