Testo 550s Smart Digital Manifold with Wireless Clamp Temperature Probes - 0564 5502


0564 5502

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The testo 550s digital manifold with 2-way valve block enables you to carry out your measurements on refrigeration and air conditioning systems and heat pumps particularly fast.

The large display also helps you to evaluate the results in graphic form. Stored programs guide you through the measurement and enable the automatic determination of numerous important system parameters such as superheat, pressure drop test or evacuation.

Bluetooth probes for temperature, pressure and humidity can be easily connected directly to the instrument and offer maximum flexibility in their application.

In conjunction with the testo Smart App, you can take care of digital documentation directly on site. In addition to this, you always have the current refrigerants available to you and can set your favourites and transfer them to the instrument. Its proven quality and great durability guarantee the continuously high performance of your manifold in all conditions.


  • 90 Built in refrigerants
  • -1 to 60 Bar Pressure
  • 2-way valve block with three connections (3 x 7/16" – UNF)
  • Compact, easy-to-handle, robust housing with IP 54 protection class
  • Wireless temperature and vacuum measurements via automatic Bluetooth connection
  • Guided measurement menus for target superheat, vacuum and pressure loss
  • On-site monitoring and documentation via testo Smart App
  • Large graphic display to evaluate results in graphic form
  • 90 selectable refrigerants in the instrument
  • Refrigerant management in the App with favourites and automatic updates


In this Testo 550s Smart Kit, you will receive the following:

  • Testo 550s Smart digital manifold with Bluetooth
  • 2 x wireless Bluetooth clamp temperature probes
  • Protective Case
  • Batteries
  • Testo Smart App (free download)
  • Certificate of conformity and user's manual

Also available with filling hoses. Go to: Testo 550s Smart Kit with
filling hoses 0564 5503


testo 550s
Sensor types Temperature Pressure 
Measuring range -50 to +150 °C -1 to 60 bar
Accuracy ±0.5 °C ±0.5% fs
Resolution 0.1 °C 0.01 bar
Probe connection 2 x plug-in (NTC) 3 x 7/16" – UNF
Overload rel. (high pressure) - 65 bar


testo 550s
General technical data
Operating temperature -20 to +50 °C
Storage temperature -20 to +60 °C
Battery type 4 AA microcells
Battery life 250 h with no illumination, no Bluetooth®
100 h with illumination and Bluetooth®
Auto power off After 10 minutes when not connected via
Protection class IP54
Bluetooth technology/
Bluetooth® 5.0/150 m
Compatibility requires iOS 11.0 or newer/Android 6.0 or newer
requires mobile terminal device with
Bluetooth® 4.0
Dimensions 210 x 121 x 60 mm
Weight 826 g


testo 115i
Sensor types NTC
Measuring range -40 to +150 °C
Accuracy ±1.3 °C (-20 to +85 °C)
Resolution 0.1 °C


testo 115i
General technical data
Operating temperature -20 to +50 °C
Storage temperature -20 to +60 °C
Battery type 3 micro batteries AAA
Battery life 150 hrs
Dimensions 183 x 90 x 30 mm
Bluetooth® range up to 100 m


Buy with 100% confidence knowing your purchase is backed by the full Manufacturer's Warranty. Please register your product with provided warranty card.


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