Testo Smart Probes: Compact Bluetooth Instruments

The compact and wireless Smart Probes can be operated by a smartphone or tablet via the testo Smart Probes App, which also provides complete reports at the push of a button. These durable multi-function probes are perfect for all aspects of the HVAC field.

How to contact us.

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Phone: 1-800-227-0729
E-Mail: info@testo.com

The testo Smart Probe Sets

The new Testo Smart Probes

For additional convenience, the testo Smart Probes are available individually or in 3 kit configurations to accommodate common HVAC testing methods.



Measuring with an App has many advantages

Testo Smart Probes

Remote Measurement Monitoring

Measurement data is transmitted to the convenient and powerful testo Smart Probes app for remote operation and monitoring up to 50 ft. clear line of site.
Testo Smart Probes App

Download from your App Store!

Find out what makes the testo Smart Probes App so convenient.

Testo Smart Probes with App

Easy Report Generation

Measurement data can be exported directly from the app as a full report, complete with picture, and saved via email as a PDF, Excel or JPG file.

testo Smart Probes App

Display Multiple Probes

The powerful Smart Probes App can connect and display measurements of up to 6 smart probes simultaneously.

testo Smart Probes App

Trending and Table Display

The App can quickly visualize measurement value changes using the graph or table display mode options.
testo Smart Probes App

Special Application Modes

  • The A/C + Refrigeration Application provides automatic evaporation and condensation temperatures as well as superheat and Sub-cooling measurements.
  • The Volume Flow Application allows for the configuration of duct parameters for automatic CFM calculations.
  • Cooling and Heating Power enables automatic BTU calculations

Overview of the Testo Smart Probes

testo 115i

testo 115i – Pipe Clamp Thermometer Smart Probe

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

testo 405i – Thermal anemometer operated with your smartphone

testo 405i – Hot Wire Anemometer Smart Probe


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.