Starting at $460.00
  • Usually ships in 1-2 weeks



  • Measurement ranges:
    • Pressure: -15 to 870psi (-1 to 60bar)
    • Temperature: -58 to 302°F (-50 to 150°C)
  • Four kit configurations available
  • Uses 4x AA batteries (approx. 100 to 250hrs of battery life)
  • Bluetooth 5.0 connectivity (up to 500ft range)
  • IP54 protection class
  • 2 year warranty


The Testo 550S digital manifold kit provides accurate tools for measurement on refrigeration, air conditioning systems, and heat pumps. Stored programs in the manifold guide the user through measurements and enable the automatic determination of numerous important system parameters such as superheating/subcooling, target superheat, cooling/heating capacity and many other areas. Bluetooth probes for temperature, vacuum, and humidity can be connected and provide flexibility in their application. In conjunction with the Testo Smart App, the user can easily create digital documentation on site.

Four kit configurations available:

  • Basic Kit: Smart digital Manifold with 2x wired temperature probes
  • Smart Kit: Smart digital Manifold with 2x 115i Bluetooth wireless temperature probes
  • Smart Vacuum Kit: Smart digital Manifold w/ 552i wireless vacuum & 115i temperature probes
  • Smart Vacuum Kit with Hoses: Same as vacuum kit with the addition of three hoses

**PLEASE NOTE: The Testo Smart App currently runs on iOS 11.0 (or newer), and Android 6.0 (or newer)**