The palm-sized Sauermann Si-HH3 thermo-hygrometer easily measures relative humidity and temperature.

Backlit LCD screen
Calculated values on mobile App (free)
Magnetic backing for easy fixing
Carrying bag

Measure details

  • Units
    °F, °C, % RH, °C Tw, °Ctd, °Ftd, °F Tw, g/m³, g/kg, kj/kg
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Measuring ranges

  • Relative humidity
    0.00 % RH ... 100.00 % RH
  • Dew point
    -40.00 °Ctd ... 60.00 °Ctd
  • Absolute humidity
    0.00 g/m³ ... 600.00 g/m³
  • Temperature
    -20.00 °C ... 60.00 °C
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Technical details

  • Parameters
    Humidity
    Temperature
  • Displays
    2-line display
  • IP Protection
    IP 20
  • Battery life
    250 hours
  • Standards
    2011/65/EU RoHS II
    2012/19/EU WEEE
    2014/53/EU RED
  • Wireless connection
    1
  • Power supply
    3 alkaline batteries LR03 AAA 1.5 V
  • Probe type
    Built-in probe
  • Protective cover
    No
  • Interchangeable module
    No
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Instrument Dimensions

  • Length
    2 3/4 inches
  • Width
    1 5/16 inch
  • Height
    8 31/32 inches
  • Weight
    7 pounds
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Operating temperature

  • Min
    -10.00 °C
  • Max
    60.00 °C
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Storage temperature

  • Min
    -20.00 °C
  • Max
    70.00 °C
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1 Certificate of conformity
1 Quick Start Guide
3 Alkaline batteries LR03 AAA 1.5 V
1 Carrying bag