Testo 557s Smart Digital Manifold (Choice Of Kit)

  • Wireless operation through automatic Bluetooth connection
  • Hard-wearing Digital Manifold with 4-way valve block
  • Compatible with Testo Smart App & Testo DataControl Software
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Testo 557s Digital Manifold

The Testo 557s Digital Manifold with a 4-way valve block is an ergonomically designed device ideal for commissioning, servicing and performing maintenance on refrigeration systems and heat pumps. Featuring built-in Bluetooth and wireless operation, the 557s includes a large easy-to-use display and improved additional measurement menus with pressure values for evacuation & leak tests presented as graphs. Thanks to dot matrix technology, this instrument can produce more values simultaneously for improved evaluation and flexible graphics such as an analogue look for fast and easy pressure values. An automatic Bluetooth connection provides the user with the ability to measure vacuum and temperature accurately & efficiently.

Assisting with measurements, the 557s Digital Manifold comes supplied with stored programs complete with clear operational guides. For tasks with crucial system parameters such as superheating, sub cooling and cooling/heating capacity these programs automatically determine numerous important variables. Refrigerant favourites can now be saved for quick selection as they are stored internally and constantly updated by the free app. Test menu sequences are included for target superheat, pressure leak test, vacuum and discharge line temperature.

Effortlessly link Testo Smart Probes to the intuitive Testo 557s through a direct wireless connection with a range of up to 150m. These probes for temperature, pressure and humidity readings effortlessly link and remain consistently connected to your device. Featuring an improved operating concept and fewer buttons, this digital manifold guarantees continuously high performance. Rated IP54, the internal metal frame and tight, robust housing ensures the durability needed for the toughest tasks.

Testo 552i Smart Probe Vacuum Gauge 

The Testo 552i Smart Probe Vacuum Gauge is a robust device ideal for quickly and easily identifying vacuum. Measure vacuum wirelessly though a single service port and avoid unnecessary leaks, utilising the probe's integrated 45˚ angle for simple installation. Rated IP54, this Smart Probe automatically connects to the free Testo Smart App or Digital Manifold via Bluetooth with a range of up to 130m. Results are displayed graphically either in app or on the manifold digital display screen. 

Testo 557s Heat Pump Kit

The Testo 557s Heat Pump Kit allows user to measure monobloc or split heat pump systems. Supplied with a Testo 770-3 clamp meter for compressor current testing, whilst the Testo 560i digital scales allow for accurate and effective refrigerant charging via weight. The test menu sequence for pressure leak test, vacuum measurement (using the included Testo 552i Vacuum Smart probe), discharge line temperature and target superheat. The kit comes complete with two Testo 115i Bluetooth temperature clamp probes that allow for simple measurements of superheat and subsoil values. The Testo Heat Pump kit provides users the ideal kit to measure, commission, service and maintain heat pumps, refrigeration and air conditioning systems.

Testo Smart App

The Testo Smart App is a free to download App on iOS and Android, suitable for use in all refrigeration, air conditioning, heating and ventilation applications. Users are able to operate, measure and document test results when using the Smart App alongside all compatible Testo Bluetooth enabled measuring instruments. Pro measurement programs air balancing and multi site measurements allow numerous sites to be managed simultaneously.

The App is easy to use thanks to the intuitive measurement menus with quick configuration and uncomplicated documentation design. All measurements are quickly viewable in just a few clicks with graphic and tabular curve displayed. Test measurements and customer data can be stored on the app, with reports easily generated and dispatched to customers and colleagues direct from the App.

The Testo Smart app is free to download and free to use, and is always up to date thanks to continuous updates and extensions from Testo. Data exchange is also available with the Testo PC software DataControl.

Testo DataControl Software

Providing users with all the information available in a single click, the Testo DataControl Software features a highly intuitive user interface. Manage customer profiles, filter/sort measurements and assign measuring points to collected data. Export and save graphics, with up to 4 readings displayable at once in this professional-quality software.

Testo 557s Digital Manifold Kits

The Testo 557s is available in three sets; Testo 557s Smart Kit, Testo 557s Smart Kit With Hose Set and Testo 557s Heat Pump Kit:

Key Features

  • Connect to free App and Smart probes via Bluetooth
  • No need for cables or wires
  • Easy-to-read digital display
  • Simple user interface
  • Ideal for refrigeration, air conditioning systems & heat pumps
  • Features 4-way valve block & robust hook
  • Includes automatic probe recognition
  • Control through your smart device
  • Rugged housing
  • Safety rated IP 54
  • Compact & minimalistic design
  • Use in conjunction with Testo Smart App
  • Results displayed simultaneously
  • Build professional quality reports
  • Favourite refrigerants list
  • Compatible with Testo Smart Probes
  • Measure vacuum, temperature & humidity
  • Test menu sequences for superheat, discharge line temp and more
  • Testo DataControl Software compatible
  • Manage measuring points and customer profiles

Testo Refrigeration Manifolds Range Overview

  Testo 557s Smart Kit Testo 557s Smart Kit With Hose Set Testo 557s Smart Kit With Heat Pump Kit
Order No. 0564 5571 02 0564 5572 02 300564 5571 02
Smart Digital Manifold
Calibration Protocol
Instrument Case
2 x Testo 115i Bluetooth Pipe Clamp Thermometers
Testo 770-3 Clamp meter    
Testo 552i Vacuum Smart Probe  ✔
Testo 560i Digital refrigerant scale set and intelligent valve set    
Hose filling set (4 hoses)    

Testo Refrigeration Manifolds Range Overview

Order No. Kit Name Case, Calibration
Protocol &
2x NTC
2x 115i Smart
1x Testo 552i
Smart Probe
Hose Filling Set 1x 770-3 Clamp Meter

1x 560i Digital refrigerant scale set

0564 2550 02 Testo 550i - - - - - - -
0564 3550 02 Testo 550i
Smart Kit
- - - - -
300564 3350 02 Testo 550i
Heat Pump Kit
- - - -
0564 5501 02 Testo 550s
Basic Kit
- - - - -
0564 5502 02 Testo 550s
Smart Kit
- - - - -
0564 5503 02 Testo 550s
Smart Kit
With Hoses
- - - -
300564 5502 02 Testo 550s
Heat Pump Kit
- -  
0564 5571 02 Testo 557s
Smart Vacuum Kit
-   - -

0564 5572 02

Testo 557s
Smart Kit
With Hoses
300564 5571 02 Testo 557s
Heat Pump Kit
- - ✔ & Intelligent Valve Set

What's In The Box?

Testo 557s Smart Kit Includes:

  • Calibration Protocol
  • Testo 552i Vacuum Probe (Smart Probe)
  • 2 x Testo 115i Wireless Clamp Temperature Probe (Smart Probe)
  • Hard Instrument Carrying Case

Testo 557s Smart Kit With Hose Set Includes:

  • Calibration Protocol
  • Testo 552i Vacuum Probe (Smart Probe)
  • 2 x Testo 115i Wireless Clamp Temperature Probe (Smart Probe)
  • Hose Filling Set (4 Hoses)
  • Hard Instrument Carrying Case

Testo 557s Heat Pump Kit (300564 5502 02) Includes:

  • Testo 557s Digital Manifold (without sight glass) including 4 x AA batteries and calibration protocol. Bluetooth connection use with Testo Smart App (Free download0
  • 2 x Testo 115i Bluetooth Pipe Clamp Thermometers
  • 1 x Testo 552i Vacuum Smart Probe
  • 1 x Testo 770-3 Clamp meter
  • 1 x Testo 560i Digital refrigerant scale set and intelligent valve set
  • Carry case
  • User guides

Technical Data

  • Operating Temperature: -10 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 Bluetooth
  • Dimensions: 229 x 112.5 x 71 mm
  • Weight: 1243 g
  • Protection Class: IP54
  • Bluetooth Technology/Range: 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

Sensor Type

  • Measuring range
    Pressure: -1 to 60 bar
    Temperature: -50 to +150 °C
  • Accuracy (at 22 °C)
    Pressure: ±0.5% fs
    Temperature: ±0.5 °C
  • Resolution
    Pressure: 0.01 bar
    Temperature: 0.1 °C
  • Probe Connections
    Pressure: 3 x 7/16" – UNF and +1 x 5/8" – UNF
    Temperature: 2 x plug-in (NTC)
  • Overload
    Pressure: 65 bar
    Temperature: -