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Hygro-Thermometer Psychrometer
Item Information

Model: RH-300

Name: Hygro-Thermometer Psychrometer

Manufacturer: EXTEC

  • Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature
  • Wet bulb measurements without slinging
  • Calculates T1-T2 differential (Air Temperature-External Probe Temperature) using optional probe
  • Unique sensor cap design twists to closed position for protection during storage
  • Switchable °F/°C temperature units with 0.1? resolution
See attached information
Dew Point Range
Minus 90.4F to 122F (Minus 68C to 49.9C)
Humidity Range
0 to 100% RH
Max Temp
122F (50C)
Min Temp
Minus 4F (Minus 20C)
AAA (2) 1.5 volt each
Minus 6.88F to 122F (Minus 21.6C to 49.9C)