Testo 549i – Refrigeration Pressure Smart and Wireless Probe

The testo 549i Smart Probe is a hose-less, wire-less, pressure probe for measuring refrigerant charge in AC/Refrigeration systems. It is used for servicing, troubleshooting, and documenting the operation of residential or commercial AC/refrigeration systems. When two 549i are used in conjunction with two 115i pipe-clamp temperature probes it is easy to monitor superheat and sub-cooling in AC/refrigeration systems.

Key Features:

  • Measures high-side or low-side refrigerant pressure (or both simultaneously with 2 probes) in AC/refrigeration systems
  • No hoses required! Clean, simple, accurate.
  • Low-loss refrigerant pressure testing!
  • Use with 115i pipe-clamp temperature probes for automatic superheat / sub-cooling calculations




9,950 din. bez PDV-a

SKU: 0560 1549.

Users can read the measurements using the testo Smart Probes App installed on their smart device. It can be used for determining air velocity and volume flow when used with Pitot tubes (not included). The testo 510i works on smart devices with either Android or Apple operating systems.

  • testo 549i
  • Bluetooth hot-wire anemometer with App
  • 3 AAA batteries and certificate of calibration
Measuring range
  • -14 to +870 psi / -1 to +60 bar
  • ±0.5 % of full-scale value
  •  0.10 psi / 0.01 bar
Probe connection
  • 7 / 16 in. – UNF
Overload rel. (high pressure)
  • +943 psi / +65 bar

Here you can download the brochure for testo 549i.