testo Standard humidity/temperature probe (Ø 21 mm)

  • Probe shaft diameter of 21 mm
  • Fast response time for air temperature measurement
  • Temperature measuring range: -20 to +70 °C

The standard humidity/temperature probe means you can check the indoor air climate quickly and reliably.

testo 0636 9740

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Use the standard humidity and temperature probe (with an appropriate  measuring instrument) to assess the indoor air climate and check the  ambient conditions


Temperature - NTC
Measuring range
                            -20 to +70 °C
                            ±0.4 °C (-10 to +50 °C)
                            ±0.5 °C (Remaining Range)
Reaction time
                            12 s


Humidity - Capacitive
Measuring range
                            0 to +100 %RH
                            ±2 %RH at +25 °C (+2 to +98 %RH)
                            ±0.03 %RH/K (k=1)
                            long-term stability: ±1 %RH / year
                            *The sensor accuracy corresponds to the system accuracy.


General technical data
Diameter probe shaft
                            12 mm

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