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Testo 557s Digital Manifold – Choice of Vacuum Sets

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Testo-557s
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£430.80 £359.00
1 Option in Stock Free UK Delivery* Delivery Options

UK - Mainland

England, Wales and most of Scotland.

Standard Delivery - Typically Next Working Day
If items in stock1

FREE Over £249
£3.99 Under £249

Guaranteed Next Working Day Delivery

£7.99

Guaranteed Next Working Day Delivery: Pre-Noon

£14.99

Weekend Delivery: Pre-Noon

£14.99

UK - Highlands & Islands

Includes Northern Ireland (excludes Gibraltar).

Standard Delivery - Typically 2-3 Working Day
If items in stock1

£9.99

International

Calculated at checkout.


Note: Time frames based on orders placed weekdays before 3:00pm. Prices Ex VAT.

1 See delivery page for more details.

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The Testo 557s Digital Manifold is a Bluetooth-enabled digital manifold with a four-way valve block designed for carrying out measurements on refrigeration and air conditioning systems, as well as heat pumps, quickly and easily. It is supplied with a Testo 552i Wireless Bluetooth Vacuum Probe and two Testo 115i Wireless Bluetooth Clamp Thermometers. These Testo 557s Digital Manifold Sets are ideal for commissioning, servicing, and maintaining refrigeration systems and heat pumps. They are particularly well suited to applications involving A2L refrigerants and all corresponding legislation, norms, and guidelines.

There are two Testo 557s Digital Manifold Sets available: a Smart Vacuum Set and a Smart Vacuum Set with Hoses. Please see the ‘What’s Included?’ section for further details. View the videos below for a quick introduction to Testo’s range of digital manifolds and Testo’s Smart Probes.

Testo Digital Manifolds 

Testo Smart Probes

The inclusion of a Testo 552i Vacuum Probe makes the Testo 557s Digital Manifold the first manifold capable of measuring vacuum wirelessly. Additionally, wireless connectivity with Testo’s Bluetooth Smart Probes enables the measurement of temperature, pressure, and humidity, providing greater flexibility. The Testo 557s Digital Manifold includes menus designed to guide the user through measurement processes for superheat, vacuum, and pressure loss. Measurements can be viewed and evaluated on the Testo 557s Digital Manifold’s large, graphic display.

Bluetooth connectivity also enables connection to the Testo Smart App. Via this app, technicians can manage servicing and maintenance work, from measuring to documenting, via their smartphone or tablet. They can view results remotely as well as create digital documentation on-site. Moreover, this app enables convenient refrigeration management as users are provided with automatic updates and may set favourites that can be transferred to the Testo 557s to enable quicker, easier measurement. 

Finally, the Testo 557s Digital Manifold is compact and ergonomic with a robust, IP54-rated housing. It is a high-quality and durable instrument that delivers continuously high performance in all conditions.

Testo 557s Digital Manifold Key Features

  • A Bluetooth-enabled digital manifold with a four-way valve block
  • Designed for carrying out measurements on refrigeration systems, air conditioning systems, and heat pumps quickly and easily
  • Supplied with a Testo 552i Wireless Bluetooth Vacuum Probe
  • Includes two Testo 115i Wireless Bluetooth Clamp Thermometers
  • Ideal for commissioning, servicing, and maintaining refrigeration systems and heat pumps
  • Two sets available: Smart Vacuum Set and Smart Vacuum Set with Hoses
  • Capable of wireless vacuum measurements
  • Use with Testo’s Smart Probes to measure temperature, pressure, and humidity
  • Menus guide the user through measurement processes for superheat, vacuum and pressure loss
  • Large, graphic display
  • Connect to the Testo Smart App via Bluetooth
  • Manage servicing and maintenance work, from measuring to documenting, via the Testo Smart App and a smartphone/ tablet
  • View measurements and create digital documentation on-site using the Testo Smart App
  • The Testo Smart App offers convenient refrigeration management
  • Users can set favourites in the app which are transferred to the Testo 557s to enable faster and easier measurement
  • Ideal for applications involving A2L refrigerants and all corresponding norms, guidelines, and legislation
  • Compact
  • Ergonomic
  • Robust, IP54-rated housing
  • High-quality, durable instrument that delivers continuously high performance in all conditions

What’s Included?

Testo 557s Digital Manifold – Smart Vacuum Set

  • Testo 557s Digital Manifold
  • Calibration Protocol
  • Testo 552i Wireless Bluetooth Vacuum Probe
  • 2x Testo 115i Wireless Bluetooth Clamp Thermometer
  • Case

Testo 557s Digital Manifold – Smart Vacuum Set with Hoses

  • Testo 557s Digital Manifold
  • Calibration Protocol
  • Testo 552i Wireless Bluetooth Vacuum Probe
  • 2x Testo 115i Wireless Bluetooth Clamp Thermometer
  • Hose Filling Set (4 Hoses)
  • Case

Please Note: Sightglass does not come as standard on UK models. If you require a sight glass model please contact us to discuss on 01642 626 140.  

Kit Comparison

  Smart Vacuum Set Smart Vacuum Set with Hoses 
Testo 557s Digital Manifold
Calibration Protocol
Testo 552i Wireless Bluetooth Vacuum Probe 
2x Testo 115i Wireless Bluetooth Clamp Thermometer
Hose Filling Set (4 Hoses)
Case

Testo 557s Digital Manifold Technical Specifications 

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