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Testo 549i Refrigeration Pressure Smart Probe (0560 2549 03)

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SKU: tt_0560-2549-03 Categories: , Brand:

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The Testo 549i Refrigeration Pressure Smart Probe is a wireless high-pressure gauge with a 45 degree connector suitable for servicing, troubleshooting and installing air conditioning and refrigeration systems. The measuring instrument is quickly and easily attached directly to the pressure connection. It’s easy to work on pressure connections that are far apart with the Testo bluetooth pressure gauges thanks to the Testo Smart Probes App on your smart device (iOS or Android).  The Testo 549i App also enables evaporation and condensation temperatures to be calculated automatically. Also, since no hoses are needed for the measurements, no refrigerant is lost, or only a very small quantity.

The Testo Smart Probe 549i High-Pressure Gauge is the improved 2nd Generation model and winner of the German Design Award for 2020. When used in conjunction with the Testo 115i clamp thermometer, individual refrigeration system parameters can also be calculated.


  • (1) Testo 549i Refrigeration Pressure Gauge Wireless Smart Probe
  • (3) AAA Batteries
  • (1) Calibration Protocol


  • Measures high-side or low-side refrigerant pressure in AC/refrigeration systems
  • Now includes 45° angled probe connection
  • Bluetooth® range of up to 350 feet
  • No hoses required! Clean, simple, accurate
  • Low-loss refrigerant pressure testing!
  • Measurement data displayed in the form of a graph or table, and sent via testo Smart Probes App
  • Tough, accurate, and easy-to-use
  • Use with 115i pipe-clamp temperature probes for automatic superheat / sub-cooling calculations
  • Operates with iOS or Android smart devices such as smart phones, tablets, etc.
  • For all HVAC/R technicians and contractors


Pressure measurement
Measuring range : -15 to +870 psi / -1 to +60 bar
Accuracy : ±0.5 % of full-scale value
Resolution : 0.01 psi / 0.01 bar
Probe connection : 7 / 16 in. - UNF
Overload rel. (high pressure) : +943 psi / +65 bar
General technical data
Weight : 5.52 oz. / 156.6 g
Dimensions : 5 x 1 x 1 in. / 125 x 32 x 31 mm
Operating temperature : -4° to 122 °F / -20 to +50 °C
Housing : Plastic
Product colour : black/orange
Battery type : 3 x AAA
Battery life : 150 h
Pressure media : CFC, HFC, HCFC, N, H₂O, CO₂
System requirements : requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Storage temperature : -4° to 140 °F / -20 to +60 °C


Q & A

Can i measure both high side and low side pressure at the same time?

You would need two Testo 549i probes to measure them simultaneously or a Testo 549i kit.

Does this smart probe read in psi as well as bar?

Yes, it does.

Customer Reviews

Based on 1 review
testo 549i review

This one is easy to use and sync with your phone. Just wish i had boutht the set.