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Smart Probes from Testo: Compact, pro measuring instruments for your smartphone

Measurement is more mobile, more productive and easier than ever before, with the new Smart Probes from Testo.

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 Smart Probes offer you this:

  • Comprehensive range of measuring instruments for monitoring temperature, pressure, humidity and flow velocity
  • Practical kits for the most important applications in heating, air conditioning, ventilation and refrigeration
  • Operation and documentation completely via testo Smart Probes App

For smart temperature measurement

testo 115i
testo 115i

testo 115i – clamp thermometer operated by smartphone: For servicing air conditioning and refrigeration systems and measuring flow and return temperatures.

testo 905i
testo 905i

testo 905i – thermometer operated by smartphone: Measures ambient temperatures and temperatures in ducts and at air outlets.

testo 805i
testo 805i

testo 805i – infrared thermometer operated by smartphone: For the non-contact measurement of wall, fuse and component temperatures of air conditioning systems.

testo 605i
testo 605i

testo 605i – thermohygrometer operated by smartphone: For the measurement of air temperature and humidity in rooms and ducts.

testo 405i
testo 405i

testo 405i – thermal anemometer operated by smartphone: For the measurement of air flow velocities, temperatures and volume flows in ventilation ducts.

testo 410i
testo 410i

testo 410i – vane anemometer operated by smartphone: For air flow velocities, temperatures and volume flows at air outlets.

testo 510i
testo 510i

testo 510i – differential pressure measuring instrument operated by smartphone: Measures differential pressure, air flow velocity and volume flow.

testo 549i
testo 549i

testo 549i – high pressure measuring instrument operated by smartphone: For service and troubleshooting on air conditioning and refrigeration systems, as well as for installing them.

How do the Testo Smart Probes work?

Put simply, a Smart Probe is a smartphone measuring instrument. Each of the compact measuring instruments fulfils a particular measurement task. The vane anemometer testo 410i, for example, measures flow velocities. The hygrometer testo 605i, on the other hand, measures among other things the air humidity. What they all have in common is that they are operated by the testo Smart Probes App.

The advantages of the testo Smart Probes App

    Operation independent of the measuring location

    With Testo Smart Probes, both control and measuring value display work completely wirelessly via App – even at a distance of several meters from the measuring instrument.

    Display of several measuring values

    For example, simultaneous display of up to six Smart Probes enables comparison of several pressures and temperatures in refrigeration systems.

    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

    Smart documentation with data dispatch

    Measurement data reports can be supplemented with photos and sent as a PDF or Excel file while still on site.

    All measurement values can be seen immediately

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

testo Smart Probes AC & refrigeration test kit

Specially for refrigeration engineers

  • Ideal for quick checks on refrigeration systems: 2 high pressure measuring instruments and 2 clamp thermometers in the testo Smart Case
  • Operation via the testo Smart Probes App and your smartphone/tablet
  • Low refrigerant loss thanks to hoseless application
  • 80 refrigerants stored
  • Automatic calculation of evaporation and condensation temperatures
  • Measuring ranges: -40 to +150°C; -1 to 60 bar

More bestsellers for your requirements


Temperature is surely the most frequently measured measurement parameter. There is a correspondingly large choice of appropriate measuring technology. Depending on where and how you want to measure, all options are open to you. No matter whether it is a classic temperature measuring instrument, an infrared measuring instrument for non-contact measurement or an immersion thermometer to measure temperatures in liquids – you are sure to find just what you need at Testo.


The measurement of humidity is relevant in many applications. Thus, the uses of a humidity measuring instrument include determining humidity in rooms or material moisture, for instance of building materials or firewood.


When it is a case of setting air conditioning and ventilation systems correctly, you rely on a robust and precise flow meter. Testo offers you a large selection here and has also included an intuitively operated all-rounder in its range with the new testo 440.


It is above all in the heating and air conditioning trade that pressure measurements have to be carried out. A pressure measuring instrument makes it easy to determine pressures of refrigeration systems, etc. quickly and easily.