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Testo 605i – Thermohygrometer operated via smartphone


11 in stock

  • Measurement of air humidity and temperature in rooms and ducts
  • Automatic calculation of the dew point and wet bulb temperature via the Testo Smart App
  • Measurement data analyzed and sent via the Testo Smart App
  • Problem-free application at measuring points that are a long distance apart thanks to Bluetooth® range up to 100 m

10,870.00  18,742.00 

11 in stock


Product Description

In addition to measuring air temperature and relative humidity in rooms and ducts, the thermohygrometer is also suitable for checking air conditioning system humidifiers. When you use the testo 605i in conjunction with the testo 805i infrared thermometer, you can clearly identify areas susceptible to mold via the traffic light principle, with the assistance of a measurement menu that is already stored in the App.

Technical data

Temperature - NTC

Measuring range

-20 to +60 °C


±0.5 °C


0.1 °C

Velocity - Hot wire

Measuring range

0 to 30 m/s


±(0.1 m/s + 5 % of mv) (0 to 2 m/s)
±(0.3 m/s + 5 % of mv) (2 to 15 m/s)


0.01 m/s

General technical data


119.6 g


200 x 30 x 41 mm

Operating temperature

-20 to +50 °C

Product-/housing material


System requirements

requires iOS 13.0 or newer; requires Android 8.0 or newer;
requires mobile end device with Bluetooth 4.2

Product colour


Battery life

15 h

Battery type

3 AAA micro batteries

Diameter probe shaft

12 mm

Diameter probe shaft tip

9 mm

Length probe shaft

400 mm

Storage temperature

-20 to +60 °C


Datasheet : Testo 605i – Thermohygrometer operated via smartphone

Instruction Manual : Testo 605i – Thermohygrometer operated via smartphone