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Smartphone thermometer

These compact professional temperature measuring devices operated by smartphone are perfectly equipped for the most important temperature measurements in heating, air conditioning, ventilation and refrigeration. Depending on the application, you can choose from four different measuring instruments for smart temperature measurements.

NEW: testo 915i – wireless Smart Probe with plug-in temperature probes

  • Wireless temperature measurement with smartphone operation in various applications

  • Precise, fast-reaction and robust plug-in temperature probes (TC Type K, Class 1) with measuring range up to -50 to +400 °C

  • Secure attachment of the plug-in Testo measurement probes thanks to new locking mechanism; compatible with common TC probes Type K

  • Easy operation, evaluation and documentation with cost-free testo Smart App

  • Automatic Bluetooth connection to smartphones, tablets or Testo measuring instruments with a range of up to 100 m

  • High measurement accuracy thanks to system calibration ex-works

All Smart Probes and sets for smart temperature measurement


testo Smart App

  • Wireless operation and reading of measuring values on your smartphone or tablet – from a distance of up to 100 metres

  • Changes in measured values quickly displayed – as a graph or table

  • Stored measurement menus guide you through different applications.

  • Customer data and measuring points can be stored and managed in the App.

  • Measured data logs can be supplemented with images and sent immediately as PDF or Excel files, or transferred to data control PC software

Find out more


Compatible with all Bluetooth-enabled Testo measuring instruments


Direct report dispatch by e-mail


All measurement values at a glance


Intuitive measurement menus


Free download, free use


testo Smart Probes

Find everything you need to know about the testo Smart Probes at a glance.

testo Smart Probes

Overview of all Smart Probes and Smart Probes kits

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