Extech RH401 Digital Psychrometer + IR Thermometer

The Extech RH401 Digital Psychrometer + InfraRed Thermometer measures Humidity, Wet bulb, Dew Point and Air Temperature.


  • Triple display with backlighting
  • InfraRed Thermometer with built-in laser pointer
  • Precision humidity capacitance sensor retracts for protection during transportation and storage
Your Price $230.99
Usually ships in 1-2 weeks
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ImagePart#Product DescriptionPriceStockOrder
Extech RH401 Digital Psychrometer + IR ThermometerRH401 Digital Psychrometer + InfraRed Thermometer
Usually ships in 1-2 weeks
ImagePart#Product DescriptionPriceStockOrder
Extech 407752 PC Software & Cable 407752 PC software & cable
Usually ships in 1-2 weeks
The Extech RH401 Digital Psychrometer + InfraRed Thermometer measures Humidity, Wet bulb, Dew Point and Air Temperature. Readings can be easily read with its triple display with backlighting. The triple display options are to view Air temp+RH+surface temp, view Dew Point+RH+surface temp, or view Wet Bulb+RH+surface temp. The RH401 meter's precision humidity capacitance sensor retracts for protection during transportation and storage.
  • Specifications: Range Max Resolution Basic Accuracy
  • Humidity: 10 to 90%RH 0.1% RH +/-3% RH
  • Temperature (internal): -4 to 122F (-20 to 50C) 0.1 +/-1.8F or +/-1C
  • Temperature (external): -328 to 2498F (-200 to 1370C) 0.1 +/-0.3% or +/-1.8F/+/-1C
  • Dew Point: -90.4 to 122F (-68.0 to 49.9C)
  • Wet Bulb: -6.9 to 122F (-21.6 to 49.9C)
  • Dimensions: 9 x 2.2 x 1.7" (230 x 57 x 44mm)
  • Weight: 5.3oz (153g)
  • (1) Digital Psychrometer + InfraRed Thermometer
  • (4) AAA batteries
  • (1) Case
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