The Testo 550i Smart Kit is a compact app-controlled 2-way digital manifold kit designed for professional HVAC-R technicians working on refrigeration systems, air conditioning systems and heat pumps. Controlled entirely through the Testo Smart App, the 550i gives technicians a clean wireless workflow for measurement, diagnosis and digital documentation.
Supplied with 2 × Testo 115i wireless clamp thermometers and a robust transport case, this kit is ready for pressure, temperature, superheat and subcooling measurements straight out of the case. The 550i features a rugged IP54-rated housing, Bluetooth connectivity, a sturdy hook and compatibility with additional Testo Smart Probes for temperature, humidity and vacuum measurement. It is also suitable for A2L and A3 refrigerants.
Key Features
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Compact 2-way app-controlled digital manifold
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Operated via the Testo Smart App on smartphone or tablet
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Designed for refrigeration, air conditioning and heat pump systems
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Measures high and low pressure
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Automatically calculates evaporation and condensation temperatures
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Supports superheat and subcooling calculation
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Includes 2 × Testo 115i wireless clamp thermometers
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Bluetooth connection for wireless measurement and documentation
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Rugged IP54-rated housing
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Sturdy hook for easy site mounting
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Expandable with additional Testo Smart Probes for temperature, humidity and vacuum
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Compatible with A2L and A3 refrigerants
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Supplied in a robust transport case
Specifications
| Item | Specification |
|---|
| Brand | Testo |
| Model | Testo 550i Smart Kit |
| Product Number | 0564 3550 |
| Product Type | App-Controlled Digital Manifold Kit |
| Manifold Type | 2-Way Digital Valve Block |
| Display | No onboard display — app-controlled |
| Connectivity | Bluetooth / Testo Smart App |
| Included Temperature Probes | 2 × Testo 115i Wireless Clamp Thermometers |
| Refrigerant Suitability | A2L and A3 compatible |
| Protection Rating | IP54 |
| Compatible Smart Probes | Temperature, humidity and vacuum probes |
| Power Supply | 3 × AAA batteries |
| Application | Refrigeration, air conditioning and heat pump servicing |
Kit Includes
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1 × Testo 550i app-controlled digital 2-way manifold
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2 × Testo 115i wireless Bluetooth clamp thermometers
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1 × Robust transport case
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3 × AAA batteries
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Calibration protocol
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Testo Smart App free download
Applications
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Refrigeration system servicing
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Air conditioning commissioning
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Heat pump diagnostics
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High and low pressure measurement
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Evaporation and condensation temperature calculation
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Superheat and subcooling measurement
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A2L and A3 refrigerant service work
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Digital service documentation via Testo Smart App
The Testo 550i Smart Kit — 0564 3550 gives HVAC-R technicians a lightweight, modern and fully wireless digital manifold setup. With app-based operation, wireless clamp probes, smart documentation and A2L/A3 compatibility, it is a strong compact option for everyday refrigeration and air conditioning service work.
