testo 550s / testo 557s
The two new ones.
First choice
for every job.

Stefan, refrigeration technician
Stefan, refrigeration technician

"I want a big display, not a postage stamp which I’m almost going to need a magnifying glass for."

Stefan,
refrigeration technician

testo 550s / testo 557s

For Stefan, we equipped the new, digital manifolds with large, clear, graphic displays and Bluetooth.

That gives him all values at a glance, and the commissioning, service and maintenance of air conditioning and refrigeration systems are carried out faster and more easily than ever before.

  • All results at a glance
    thanks to the large graphic display
  • Exceptionally compact and reliable
    thanks to the easy-to-handle, rugged housing with IP 54 protection class
  • Simple, wireless measurement
    of vacuum and temperature via automatic Bluetooth connection
  • Even greater flexibility
    for your measurements and documentation with the testo Smart App

Everything at a glance.

  • Extra-large graphic displays,
  • the testo Smart App and
  • intuitive user guidance

make measurements faster and easier than ever before.

The advantages are obvious.

Compact, handy and robust:

  • The rugged housing
  • does its job reliably
  • even under extreme conditions.

Smart and smart belong together.

Wireless measurement, uncomplicated documentation

  • with Bluetooth probes,
  • testo Smart App and
  • free testo DataControl PC software.

Find your perfect kit.

testo 550s Basic Kit

  • Digital 2-way manifold
  • Immediately ready to go with the kit including two wired clamp temperature probes
  • Cleverly stowed in its  rugged case
  • Including calibration certificate and batteries

testo 550s Smart Digital Manifold Kit

  • Digital 2-way manifold
  • Ready to go in the kit including two wireless clamp temperature probes
  • Cleverly stowed in the rugged case
  • Including calibration certificate and batteries

testo 550s Smart Digital Manifold Kit
with wireless vacuum probe

  • Digital 2-way manifold
  • Immediately ready to go with the kit including two wireless clamp temperature probes and wireless vacuum probe
  • Cleverly stowed in the rugged case
  • Including calibration certificate and batteries

testo 550s Smart Digital Manifold Kit w/ wireless vacuum probe + 3 hoses

  • Digital 2-way manifold
  • Immediately ready to go with the kit including two wireless clamp temperature probes, wireless vacuum probe, and 3 refrigerant hoses
  • Cleverly stowed in the rugged case
  • Including calibration certificate and batteries

testo 557s Smart Digital Manifold Kit with wireless vaccum probe

  • Digital 4-way manifold
  • Ready to go in the kit including two wireless clamp temperature probes and wireless vacuum probe
  • Cleverly stowed in the rugged case
  • Including calibration certificate and batteries

testo 557s Smart Digital Manifold Kit
w/ wireless vaccum probe + 4 hoses

  • Digital 4-way manifold
  • Ready to go in the kit including two wireless clamp temperature probes, wireless vacuum probe and 4 refrigerant hoses
  • Cleverly stowed in the rugged case
  • Including calibration certificate and batteries

testo 550i Smart Manifold Kit
 

  • Smart, fully digital manifold
  • Immediately ready to go with the kit including two wireless temperature probes
  • Cleverly stowed in the practical case
  • Including calibration certificate and batteries

testo 550i Smart Kit with wireless vacuum probe

  • Smart, fully digital manifold
  • Immediately ready to go with the kit including two wireless temperature probes and wireless vacuum probe
  • Cleverly stowed in the practical case
  • Including calibration certificate and batteries

testo 550i Smart Kit with wireless vacuum probe and thermohygrometers

  • Smart, fully digital manifold
  • Immediately ready to go with the kit including two wireless temperature probes and two wireless thermohygrometers
  • Cleverly stowed in the practical case
  • Including calibration certificate and batteries