Testo Smart Probes - Refrigeration Set


Testo Smart Probes - Refrigeration Set

The testo AC/R Smart Probe Set is a combination of four instruments to measure high-side and low-side pressures and temperatures of A/C and refrigeration systems. Configured to be used during commissioning, servicing, PM and troubleshooting A/C and refrigeration systems. This kit can be operated with no tools other than your smart phone to communicate with the instruments.

Click here for product datasheet

Key Features:

  • Measure high-side & low-side refrigerant pressure & temperatures (simultaneously) of AC/refrigeration systems
  • Low-loss AC/R system checks. No hoses required!
  • Complete and compact wireless AC/R test kit
  • Calculate superheat and subcooling in the Smart Probe App


Users can remotely read the measurements from multiple probes by using the testo Smart Probes App. The kit comes with a handy case at a great value.

The testo Smart Probes App is a powerful and easy-to-use tool. It allows you to remotely read measurements from up to six (6) Smart Probes and easily document/report the results. Automatic calculations make it a snap!

All measurement data is displayed as instrument readings, tables, or graphs. The measurements can be quickly saved as PDF or Excel files. The App creates custom reports which can be saved and/or shared by email. All your data can be stored and retrieved saving you hours of time
consuming paperwork!

What's included:

testo Smart Probes AC/R set for servicing, commissioning and error detection on air conditioning and refrigeration systems. Consists of: 2x testo 115i, 2x testo 549i, testo Smart Case (refrigeration), batteries, and certificate of calibration

Temperature - NTC

Technical data

Measuring range

-40° to 302 °F / -40 to +150 °C


±2.3 °F (-4° to 185 °F) / ±1.3 °C (-20 to +85 °C)


0.1 °F / 0.1 °C

Pressure measurement

Technical data

Measuring range

-14 to +870 psi / -1 to +60 bar





Probe connection

7 / 16 in. - UNF

Overload rel. (high pressure)

+943 psi / +65 bar

General technical data

Technical data

System requirements

requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0


2 years

Battery type

3 AAA micro batteries

Battery life

250 h (testo 115i); 150 h (testo 549i)

Pressure media


Storage temperature

-4° to 140 °F / -20 to +60 °C


7 x 4 x 1 (testo 115i) / 183 x 90 x 30 (testo 115i)
5 x 1 x 1 (testo 549i) / 125 x 32 x 31 (testo 549i)

Operating temperature

-4° to 122 °F / -20 to +50 °C

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Product Images (click to enlarge)
  • Testo Smart Probes - Refrigeration Set
  • Testo Smart Probes - Refrigeration Set
  • Testo Smart Probes - Refrigeration Set
  • Testo Smart Probes - Refrigeration Set