Testo 550s Smart Digital Manifold
Supported models: Testo 550s (order no. 0564 5500; Basic Kit 0564 5501 01)
- AC\R & Heat Pump Testing
- Bluetooth
- Refrigerant Pressure
- Refrigerant Temperature
- App-to-App
Entry-level smart digital manifold with a 2-way valve block, guided measurement menus, and Bluetooth streaming to measureQuick for automated superheat and subcooling.
Visit tool →The testo 550s is a smart digital manifold with a 2-way valve block for commissioning, servicing, and maintaining refrigeration systems, air conditioning systems, and heat pumps. A large graphic display renders pressure in an analog look, and stored measurement programs guide the user through superheat, subcooling, target superheat, capacity, and tightness tests, automatically determining system parameters. It measures pressure from -14 to 870 psi at plus or minus 0.5 percent full scale and temperature from -58 to 302 F via two plug-in NTC probes. Vacuum, humidity, and temperature are read by wireless probes over Bluetooth 5.0 to the testo Smart App; the manifold has no integrated vacuum sensor and uses the wireless 552i probe. It connects via Bluetooth to measureQuick to stream live pressure and temperature for real-time refrigerant-side analysis.
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Specifications
| Specification | Value |
|---|---|
| Model / SKU | Testo 550s (0564 5500) |
| Valve block | 2-way |
| Pressure measuring range | -14 to 870 psi (-1 to 60 bar) |
| Pressure accuracy | +/- 0.5 % full scale |
| Pressure resolution | 0.1 psi (0.01 bar) |
| Pressure overload | 940 psi |
| Pressure probe connections | 3 x 7/16 in UNF |
| Temperature measuring range | -58 to 302 F (-50 to 150 C) |
| Temperature accuracy | +/- 0.9 F |
| Temperature probe connections | 2 x plug-in NTC |
| Vacuum measurement | Via wireless testo 552i probe (no integrated sensor) |
| Refrigerants stored | 90 (auto-updated via app) |
| Bluetooth | Bluetooth 5.0, up to ~500 ft (150 m) |
| Battery type | 4 x AA |
| Battery life | 250 h (no illumination/Bluetooth); 100 h (with illumination + Bluetooth) |
| Protection class | IP54 |
| Dimensions | 8.3 x 4.8 x 2.4 in |
| Weight | 1.8 lbs |
| Warranty | 2 years |
Product line
Digital Manifolds
Advanced digital manifolds featuring Bluetooth connectivity and smart measurement menus - delivering comprehensive HVAC system diagnostics with automatic calculations and documentation.
View the full Digital Manifolds line →-
Testo 557s Smart Digital Manifold
SunsetFour-way smart digital manifold bundled with the wireless 552i vacuum probe, confirmed with measureQuick. Discontinued and replaced by the testo 558s, but still supported for current owners.
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Testo 558s Smart Digital Manifold
Four-way digital manifold with a capacitive touchscreen, plus or minus 0.25 percent full-scale pressure accuracy, hybrid USB-C and AA power, and on-device 30-minute data trends. The direct replacement for the testo 557s.
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Testo 570s Smart Digital Manifold
Four-way long-term-logging flagship manifold with the world's longest manifold runtime of up to 360 hours, plus or minus 0.25 percent full-scale accuracy, and intelligent error analysis in the testo Smart App.
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