Testo 605-H1 - Compact Thermal Hygrometer

Part Number: 0560 6053 Brand: Testo

Testo 605-H1 - Compact Thermal Hygrometer

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The Testo 605-H1 thermal hygrometer is capable of precise measurements of air humidity and air temperature, as well as calculations of dewpoint temperature.

The Testo 605-H1 is ideally suited for duct measurements, due to its slim form factor and ability to be read from multiple angles, with a rotatable probe.

With its long term, resilient, Testo patented sensor, the Testo 605-H1 thermal hygrometer can provide correct air humidity, air temperature, and dewpoint calculations for in-duct and ambient conditions.

The rotating cap will further protect the sensor from dirt and impact, ensuring reliable measurements for years.
  • Slim form factor is convenient for duct or ambient measurements
  • Resilient Testo patented humidity sensor ensures long life
  • Rotating display allows for easy reading of measurements
  • Quick response sensor provides fast readout of measurements



Delivery Scope

  • Testo 605-H1, 3 AAA batteries, Attachment Clip, and Instruction Manual


  • 3 oz. (with batteries, without packaging) / 75 g (with batteries, without packaging)

Operating Temperature

  • 32° F to 122° F / 0° C to +50° C

Battery Type

  • 3 x AAA

Battery Life

  • Approx. 1000 h

Storage Temperature

  • -4° F to 158° F / -20° C to +70° C

Temperature - NTC

  • Measuring Range: 32° F to 122° F / 0° C to +50° C | -20° C to +50° C td
  • Accuracy: ± 0.9° F / ± 0.5° C
  • Resolution: 0.1° F / 0.1° C

Humidity - Capacitive

  • Measuring Range: 5 to 95 %RH
  • Accuracy: ± 3 %RH
  • Resolution: 0.1 %RH
  • Please see the additional accuracy information for humidity in the instruction manual

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