Testo Smart Probes: Compact pro measuring instruments

For you, measurement is easier, more mobile and more productive than ever before, with the new Testo Smart Probes. Because the compact pro measuring instruments can be operated wirelessly with your own smartphone or tablet via the testo Smart Probes App, and conveniently transported in the handy testo Smart Case. That way, you always have all your measurement technology with you and immediately ready to hand.

The Testo Smart Probes in a set

The new Testo Smart Probes

Assemble your individual Smart Probe set now, or save with one of these three complete offers:



Measuring with an App has many advantages

Testo Smart Probes

Measurement site-independent operation

Control and measurement value display with the Testo Smart Probes function completely wirelessly by App – even at several meters distance from the measuring instrument.

Testo Smart Probes App

Details on the testo Smart Probes App

Find out what makes the testo Smart Probes App so particularly practical.

Testo Smart Probes with App

Clever documentation with data dispatch

Measurement data reports can be completed with photos, and sent out as a PDF or Excel while still on site.


testo Smart Probes App

Display of several measuring instruments

The display of up to six Smart Probes simultaneously enables, for example, the comparison of several pressures and temperatures in refrigeration systems.

testo Smart Probes App

All measurement values immediately visible

The App quickly visualizes measurement value changes as a graph or a table.

testo Smart Probes App

Stored menus for special applications

These measurement menus are already stored in the App:

  • Automatic calculation of evaporation and condensation temperatures, as well as superheating and sub-cooling
  • Volume flow measurement in ducts/at outlets
  • Non-contact temperature measurement by infrared with fast image documentation incl. measurement values and measurement spot marking

Overview of the Testo Smart Probes

testo 115i

testo 115i – Clamp thermometer operated with your smartphone

For servicing air conditioning and refrigeration systems and measuring flow and return temperatures.

testo 405i – Thermal anemometer operated with your smartphone

testo 405i – Thermal anemometer operated with your smartphone

For the measurement of air flow velocities, temperatures and volume flows in ventilation ducts.

testo 410i

testo 410i – Vane anemometer operated with your smartphone

For the measurement of air flow velocities, temperatures and volume flows at air outlets.

testo 510i

testo 510i – Differential pressure measuring instrument operated with your smartphone

For the measurement of differential pressure, air flow velocity and volume flow.


testo 549i

testo 549i – High-pressure measuring instrument operated with your smartphone

For service and error detection on air conditioning and refrigeration systems, as well as their installation.

testo 605i

testo 605i – Thermohygrometer operated with your smartphone

For the measurement of air temperature and humidity in rooms and ducts.

testo 805i

testo 805i – Infrared thermometer operated with your smartphone

For the non-contact measurement of wall, fuse and component temperatures in air conditioning systems.

testo 905i

testo 905i – Thermometer operated with your smartphone

For the measurement of ambient temperatures and temperatures in ducts and at air outlets.