Testo 550i Digital Manifold (Choice Of Kit)

  • Robust Digital Manifold with Bluetooth and 2-way valve block
  • Ideal for refrigeration systems, air conditioning & heat pumps
  • Compatible with Testo Smart App and Testo DataControl Software
More Info
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Testo 550i Digital Manifold

The Testo 550i Digital Manifold is a highly compact instrument featuring the exceedingly useful ability to operate through an app and Bluetooth, as opposed to messy wires or cables. Ensure you are working with maximum flexibility thanks to automatic connection to various Bluetooth probes for measuring pressure, temperature and humidity. The smallest digital manifold available also includes a 2-way valve block and robust hook for technicians to commission, service and perform maintenance on refrigeration systems and heat pumps. All activities, from measurement to documentation, can be controlled directly from a smartphone or tablet. Use the free Testo smart App to manage daily servicing work easily and efficiently.

Compatible with Testo smart probes, the 550i Digital Manifold has an extremely robust rated IP54 housing, providing reliable results time after time. The minimalist design offers fast measurements, with results and digital documentation presented clearly and professionally. The proven quality of this device guarantees durability and continuously high performance regardless of site conditions.

Testo Smart App

Avoid measurement errors easily by utilising the Testo Smart App, fully compatible with all Bluetooth-capable Testo measuring instruments. With menus providing optimum support for configuring and capturing measurements, this free app is ideal for jobs involving refrigeration systems and heat pumps. Manage a list of favourite refrigerants within your tablet or smartphone as the app automatically makes refrigerant-specific calculations of evaporation and condensation temperature. Values are presented clearly and reports can be created on-site including photos, PDF & CSV files. This app is automatically updated, free for both iOS & Android and is easy to synchronise with Testo DataControl PC software.

Testo DataControl Software

Boasting an intuitive user interface, the Testo DataControl Software provides the user with all the information available in a single click. Export and save graphics, with up to 4 readings displayable at once. Manage customer profiles, filter and sort measurements and even assign measuring points using this high-quality software.

Testo 550i Digital Manifold Kits

The Testo 550i is available in three sets; Testo 550i , Testo 550i Smart Kit and Testo 550i Heat Pump Kit

  Testo 550i App-Controlled Manifold Testo 550i Smart Kit Testo 550i Heat Pump Kit
Order No 0564 2550 02 0564 3550 02 300564 3350 02
App-Controlled Manifold
Calibration Protocol
Wireless Clamp Temperature
Probe (Smart Probe)
Wireless Clamp Temperature
Probe (Smart Probe)
Instrument Case  
2 x Testo 115i Bluetooth Pipe Clamp Thermometers    
Testo 770-3 Clamp meter    

Key Features

  • App and Bluetooth connection
  • No need for cables/wires
  • Suitable for refrigeration, air conditioning systems & heat pumps
  • Features 2-way valve block & robust hook
  • Automatic probe recognition
  • Control via smartphone/tablet
  • Robust housing
  • IP 54 rated
  • Minimalistic, compact design
  • Compatible with Testo Smart App
  • Easy to read results
  • Create professional reports
  • Features favourite refrigerants list
  • Compatible with Testo Smart Probes
  • Measure temperature, humidity and vacuum wirelessly
  • Compatible with Testo DataControl Software
  • Manage customer profiles and measuring points

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
0564 2550 02 Testo 550i - - - - -
0564 3550 02 Testo 550i
Smart Kit
- - -
0564 5501 02 Testo 550s
Basic Kit
- - -
0564 5502 02 Testo 550s
Smart Kit
- - -
0564 5503 02 Testo 550s
Smart Kit
With Hoses
- -
0564 5571 02 Testo 557s
Smart Vacuum Kit
- -
0564 5572 02 Testo 557s
Smart Vacuum Kit
With Hoses

What's In The Box?

Testo 550i Smart Kit Includes:

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

Testo 550i Heat Pump Kit (300564 3350 02) Includes:

  • Testo 550i Digital Manifold (without sight glass) including 3 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 770-3 Clamp meter
  • Carry case
  • User guides

Technical Data

  • Operating Temperature: -10 to +50 °C
  • Storage Temperature: -20 to +60 °C
  • Battery Type: 3 AAA microcells
  • Battery Life: 130 h
  • Auto Power Off: After 10 minutes when not connected via Bluetooth
  • Dimensions: 77 x 109 x 60 mm
  • Weight: 592 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: -1 to 60 bar
  • Accuracy (at 22 °C): ±0.5% fs
  • Resolution: 0.01 bar
  • Overload: 65 bar