Testo 557s Smart Digital Manifold
Supported models: Testo 557s (Smart Vacuum Kit 0564 5572 01)
- AC/R & Heat Pump Testing
- Bluetooth
- Refrigerant Pressure
- Refrigerant Temperature
- Direct Connect
Four-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.
Buy Now →The testo 557s is a smart digital manifold with a 4-way valve block for commissioning, servicing, and maintaining refrigeration systems, air conditioning systems, and heat pumps. It ships bundled with the testo 552i wireless vacuum probe for hose-free vacuum measurement; the manifold itself has no integrated vacuum sensor. A large graphic display evaluates results graphically and stored programs guide superheat, subcooling, target superheat, capacity, and evacuation measurements. 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, with a 3 x 7/16 in UNF plus 1 x 5/8 in UNF connection set. It connects via Bluetooth 5.0 to the testo Smart App and to measureQuick for real-time refrigerant-side analysis with automated superheat and subcooling.
Note: This tool has been sunset (discontinued from active support). It still works if you own one and remains compatible with measureQuick, but the testo 558s is the current recommended replacement.
Videos
Specifications
| Specification | Value |
|---|---|
| Model / SKU | Testo 557s (0564 5572 01) |
| Valve block | 4-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 + 1 x 5/8 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 bundled wireless testo 552i probe (0 to 20,000 microns; 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 | 9.0 x 4.4 x 2.8 in |
| Weight | 2.7 lbs |
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 550 Digital Manifold
SunsetOriginal Bluetooth two-valve digital manifold that sends refrigerant pressures and wired-probe temperatures to measureQuick for technicians who own this discontinued model.
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Testo 550i App-Operated Digital Manifold
App-operated two-valve digital manifold that sends refrigerant pressures to measureQuick over Bluetooth, with separate probes for temperature and vacuum.
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Testo 550s Smart Digital Manifold
Entry-level smart digital manifold with a 2-way valve block, guided measurement menus, and Bluetooth streaming to measureQuick for automated superheat and subcooling.
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Testo 557 Digital Manifold
SunsetOriginal Bluetooth four-valve digital manifold that sends refrigerant pressures and wired-probe temperatures to measureQuick for technicians who own this discontinued model.
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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.
Alternatives
This tool has been sunset. These currently supported tools cover similar measurements with measureQuick.
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Fieldpiece SMAN
Advanced digital manifolds with wireless connectivity and micron gauge - featuring rugged construction and comprehensive measurement capabilities for precise HVAC system diagnostics.
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NAVAC Nexus NX1 Digital Manifold (2-Valve)
Two-valve NEXUS digital manifold with Class 0.4 accuracy and direct Bluetooth streaming of refrigerant pressure, temperature, and subcooling to measureQuick.
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NAVAC NEXUS 2 NX1G Digital Manifold (2-Valve)
Second-generation NEXUS 2 two-valve digital manifold with a 5.5-inch HD color touchscreen, Class 0.4 accuracy, and Bluetooth streaming to measureQuick.