Testo 549i Bluetooth High Pressure Gauge
Testo 549i Bluetooth High Pressure Gauge
Testo 549i Bluetooth High Pressure Gauge
Testo 549i Bluetooth High Pressure Gauge
Testo 549i Bluetooth High Pressure Gauge

Testo 549i Bluetooth High Pressure Gauge

£64.60 ex. VAT
£77.52 inc. VAT
RRP: £91.20

Smart Phone + Smart Probes = Smart Work

The handy high-pressure gauge testo 549i, in combination with a smartphone or tablet, is suitable for service and error detection on air conditioning and refrigeration systems, as well as for their installation. The measuring instrument can be quickly and easily attached directly to the pressure connection. When working at pressure connections which are far apart, the testo 549i makes the application considerably easier – thanks to a wireless connection to a smartphone or tablet. Also useful: since no hoses are needed for the measurements, very little or no refrigerant is lost.


 Get all measurements directly to your phone and download results at the touch of a button

And if the clamp thermometer testo 115i is used simultaneously, individual refrigeration system parameters such as superheating can be calculated. Users can read off their measurement values comfortably in the testo Smart Probes App installed on the end device. The testo Smart Probes App additionally enables the automatic calculation of evaporation and condensation temperatures.
All measurement data are presented either as a diagram or in tabular form. The measurement protocols can then be directly sent as PDF or Excel files.


  • Compact professional measuring instrument from the Testo Smart Probes series, for use with smartphones/tablets
  • Measurement of high and low pressure
  • Fast and easy installation at a pressure connection
  • Low refrigerant loss thanks to hoseless application
  • Measurement data analysed and sent via testo Smart Probes App
  • Small, compact, and easy to transport

Testo Smart Probes App

The App turns your smartphone/tablet into the display of the testo 549i. The operation of the measuring instrument as well as the display of the measurement values take place by Bluetooth via the Testo Smart Probes App on your smartphone or tablet – independently of the measurement location.

In addition to this, you can use the App to create measurement reports, add photos and comments to these, and send them by e-mail. The Testo Smart Probes App is completely free and is available for iOS from the App Store and Android via Google Play.

Sensor type Pressure
Measuring range -1 to 60 bar
Accuracy ±1 digit 0.5 % of final value
Resolution 0.01 bar
Connection 7/16" – UNF
Overload rel. 65 bar

Sensor type NTC
Measuring range -20 to +60 °C
Accuracy ±1 digit ±0.5 °C
Resolution 0.1 °C

General technical data
requires iOS 8.3 or newer / Android 4.3 or newer
requires mobile end device with Bluetooth 4.0
Storage temperature -20 to +60 °C
Operating temperature -20 to +50 °C
Battery type 3 micro batteries AAA
Battery life 150 hrs
Measureable media CFC, HFC, HCFC, N, H2O, CO2
Dimensions 125 x 32 x 31 mm
Warranty 2 years

Click here for the Testo 549i data sheet