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.

New: Extended Bluetooth Range!

The Smart Probes offer you the following

  • Comprehensive selection of measuring instruments: smartphone anemometer, iPhone (and Android) hygrometer, smartphone thermometer and lots more
  • Practical kits for the most important applications in heating, air conditioning, ventilation and refrigeration
  • Operation and documentation entirely via the testo Smart Probes App

testo Smart Probes
AC & refrigeration test kit

testo Smart Probes
AC & refrigeration test and load kit

testo Smart Probes
HVAC/R Complete kit

testo Smart Probes heating kit

testo Smart Probes VAC kit

Large softcase –
can be individually fitted out

Important information for Testo's smartphone measuring instruments

In the brochure you will find all you need to know about Smart Probes, smartphone thermometers and iPhone thermometers at a glance:
Is your smartphone compatible with the Testo Smart Probes and the testo Smart Probes App? Find out here:
Use the Testo Smart Probes Matrix to discover which Testo Smart Probes are best suited for a variety of HVAC/R, IAQ, and Comfort Measurements.

For smart temperature measurement

New generation Smart Probe testo 115i with extended Bluetooth range

testo 115i – Pipe-Clamp Thermometer Wireless Smart Probe

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

Smartphone thermometer

testo 905i – Thermometer Wireless Smart Probe

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

iPhone thermometer

testo 805i – Infrared Thermometer Wireless Smart Probe

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

For smart humidity and flow velocity measurement

New generation smart hygrometer testo 605i with extended Bluetooth range

testo 605i – Thermo-Hygrometer Wireless Smart Probe

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

testo 405i – thermal anemometer operated by smartphone

testo 405i – Hot-Wire Anemometer Wireless Smart Probe

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

testo 410i

testo 410i – Vane Anemometer Wireless Smart Probe

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

For smart pressure measurement

Pressure measurement iPhone

testo 510i – Differential Pressure Manometer Wireless Smart Probe

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

New generation smartphone measuring instrument testo 549i with extended Bluetooth range

testo 549i – Refrigeration Pressure Wireless Smart Probe

For service, error detection, and installation of air conditioning and refrigeration systems.

How do Testo's smartphone thermometers and smartphone measuring instruments work? With an App!

In simple terms, a Smart Probe is a smartphone measuring instrument. Each of the compact measuring instruments fulfils an entirely specific measuring task in this respect. The testo 410i vane anemometer (smartphone anemometer) for example measures flow velocities. The testo 605i hygrometer (iPhone hygrometer) in turn measures humidity, among other things. What is common to them all, is operation via the testo Smart Probes App.

Measuring with an App Has Many Advantages

Measurement using the testo Smart Probes App has many advantages:
Testo Smart Probes

Remote Measurement Monitoring

Measurement data transmits to the convenient and powerful testo Smart Probes app, for remote operation and monitoring at up to 50 feet, with a clear line of sight.

Testo Smart Probes with App

Easy Report Generation

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

testo Smart Probes App

Display Multiple Probes

The powerful testo Smart Probes app can connect and display measurements from up to 6 Smart Probes simultaneously.

testo Smart Probes App

Trending and Table Display

The app can help you quickly visualize measurement value changes, using the graph or table display mode options.

testo Smart Probes App

Special Application Modes

  • The AC + Refrigeration section provides automatic evaporation and condensation temperatures, as well as superheat and subcooling measurements.
  • The Volume Flow section allows for the configuration of duct parameters for automatic CFM calculations.
  • The Cooling and Heating Power section enables automatic BTU calculations.

testo Smart Probes AC & refrigeration test kit

Smartphone hygrometer

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
  • More than 90 refrigerants stored
  • Automatic calculation of evaporation and condensation temperatures
  • Measuring ranges: -58 to 302 °F; -14 to 870 psi



More bestsellers for your requirements



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.


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.