Testo 605i - Thermohygrometer (Bluetooth)

Bluetooth Thermohygrometer operated with smartphone, incl. batteries and calibration protocol
Part number: 0560 1605
Manufacturer: Testo
£69.00 (ex VAT)


Smart Phone + Smart Probes = Smart Work

The compact humidity measuring instrument testo 605i, in combination with a smartphone or tablet, is suitable for the measurement of air temperature and relative humidity in rooms and ducts. Together with the thermal anemometer testo 405i, cooling and heating performance can also be determined.

Users can read off their measurement values comfortably in the testo Smart Probes App installed on the end device. The App also enables the automatic determination of dewpoint and wet bulb temperature. All measurement data are presented either as a diagram or in tabular form The measurement protocols can then be directly sent as PDF or Excel files.



 Get all measurements directly to your phone and download results at the touch of a button



  • Compact professional measuring instrument from the Testo Smart Probes series, for use with smartphones/tablets
  • Measurement of air humidity and temperature in rooms and ducts
  • Automatic calculation of dewpoint and wet bulb temperature via testo Smart Probes App
  • Measurement data analysed and sent via testo Smart Probes App
  • Small, compact, and easy to transport


Testo Smart Probes App

The App turns your smartphone/tablet into the display of the testo 605i. The operation of the measuring instrument as well as the display of the measurement values take place by Bluetooth via the Testo Smart Probes App on your smartphone or tablet – independently of the measurement location.

In addition to this, you can use the App to create measurement reports, add photos and comments to these, and send them by e-mail. The Testo Smart Probes App is completely free and is available for iOS from the App Store and Android via Google Play.


Sensor type Humidity – capacitive
Measuring range 0 tp 100 %RH
Accuracy ±1 digit ±(1.8 %RH 3 % of m.v.) at +25 °C (5 to 80 %RH)
Resolution 00.1% RH


Sensor type NTC
Measuring range -20 to +60 °C
Accuracy ±1 digit ±0.8 °C (-20 to 0 °C)
±0.5 °C (0 to +60 °C)
Resolution 0.1 °C


General technical data


requires iOS 8.3 or newer / Android 4.3 or newer
requires mobile end device with Bluetooth 4.0
Storage temperature -20 to +60 °C
Operating temperature -20 to +50 °C
Battery type 3 micro batteries AAA
Battery life 250 hrs
Dimensions 243 x 30 x 24 mm
100 mm probe shaft
Warranty 2 years



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