Digital manifolds Testo
Digital manifolds Testo

Everything at a glance.
In your hand.

Fast measurement and easy operation via large graphic display and your smartphone –
and yet extremely compact and rugged.

The new digital manifolds from Testo.


testo 550i Smart Kit with wireless temp clamps 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

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 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

Which refrigeration measurement type are you?

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

Stefan, refrigeration technician
refrigeration technician
testo 550s testo 557s

testo 550s / testo 557s – the new standard

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.

"A measuring instrument is a tool – and first and foremost, it needs to be tough."

Manfred, refrigeration plant fitter
refrigeration plant fitter
testo 550i

testo 550i – the analog killer

Manfred is happy that testo 550i, the smallest manifold in the world, is not only robust and reliable, but can be easily operated via smartphone.

"I want everything to happen in one App: measurement, calculation and reporting."

Marco, refrigeration mechatronics engineer
Marco, refrigeration mechatronics engineer
testo 550i

testo 550i – the gamechanger

Marco does everything by smartphone. In life – and now in his job too. We developed the testo 550i, the world’s only completely App-controlled manifold, just for people like him. It allows him to measure, document and send reports wirelessly.

The right measuring instrument for every application.

Refrigeration and air conditioning systems

Measuring instrument refrigeration systems
  • High-precision measurements of pressure, temperature, superheat and subcooling
  • Ensure tightness of refrigeration systems
  • Test and optimize the efficiency of the system

You have to deal with refrigeration and air conditioning systems?

Then our digital manifolds kits are perfect for you. With several options available, including wireless smart probes for temperature and vacuum, and a rugged case, our digital manifolds are immediately ready to use.

Heat pumps

Measuring instrument heat pumps
  • High-precision measurements of pressure and temperature
  • Controlled refrigerant service
  • Easy tightness testing and evacuation

Do you have to deal with heat pumps?

Then our digital manifolds are perfect for your heat pump measurements. With all the necessary hoses and accessories cleverly stowed in the rugged case, they’re immediately ready for work.

Be smart, measure smart. Clever companion for all manifolds.

testo 552i – wireless and hoseless

testo 552i

With the new testo 552i App-controlled vacuum probe, you can measure vacuum wirelessly, without hoses, complete with a 45° angled connection.

testo Smart App – one for everything

testo Smart App

With the testo Smart App, you turn your smartphone into a mobile, multi-functional command centre for all applications involving refrigeration, air conditioning and heat pumps.

Other measuring instruments for refrigeration, air conditioning, or heating professionals

Get more information on our digital manifolds here:

Digtal Manifolds

Everything important on the new generation of digital manifolds from Testo for free download.

Application examples
for digital manifolds

Download our free application examples, with information on how to use Testo digital manifolds easily and efficiently.

Downloads, guides and practical knowledge

With the help of our useful filter function, you’ll find just what you need right away. Get your knowledge headstart now.

Measurement solutions
for refrigeration technology

This way for more information on refrigeration applications.