Testo 905i - Thermometer (Bluetooth)

Bluetooth Thermometer operated with smartphone, incl. batteries and calibration protocol
Part number: 0560 1905
Manufacturer: Testo
£49.00 (ex VAT)


Smart Phone + Smart Probes = Smart Work

The compact thermometer testo 905i, in combination with a smartphone or tablet, is suitable for the measurement of ambient temperature as well as the temperature in ducts and air outlets. Users can read off their measurement values comfortably in the testo Smart Probes App installed on the end device.

All measurement data are presented either as a diagram or in tabular form, can be made into a report and then transmitted 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 temperature in rooms, ducts and at air outlets
  • Fast identification of temperature changes by graph curve display
  • 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 905i. 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 Type K (NiCr-Ni)
Measuring range -50 to +150 °C
Accuracy ±1 digit ±1 °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 222 x 30 x 24 mm
100 mm probe shaft
Warranty 2 years



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