Key facts
- Brand
- testo
- Model
- 550i
- Industry
- Electronics
- Documents
- 2
- Languages
- EN · PT
- Last added
- 2026-11-01
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testo 550i Digital Manifold User Manual
The testo 550i is a fully digital, application-based manifold collector designed for digitally enabled HVAC/R technicians. It features a 2-way valve block and supports various wireless probes via Bluetooth® connection to the Smart testo app on iOS or Android devices. The instrument allows for quick measurements, results, and digital documentation. This manual is written in Portuguese.
Read onlinetesto 550i specifications
| Battery Type | 3 x AAA/micro/R03 |
|---|---|
| Bluetooth Compatibility | testo Smart App with iOS 12.0+ or Android 6.0+ |
| Measuring Range | -1 to 60 bar (-14.7 to 870 psi) |
All testo 550i documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
How do I connect the testo 550i to a smartphone?
Use the testo Smart App on a compatible iOS or Android device with Bluetooth 4.0 to establish a connection.
What is the recommended calibration frequency?
Recalibration once every 12 months is recommended for optimal accuracy.
What is the maximum torque for connecting refrigerant hoses?
The maximum torque is 5.0 Nm (3.7 ft*lb).
Which refrigerants are not measurable by this instrument?
Ammonia (R717) and other refrigerants containing ammonia are not measurable.