Description
The Testo 557s (Part Number: 0564 5571) is a comprehensive smart digital manifold kit engineered for the commissioning, servicing, and maintenance of complex refrigeration systems and heat pumps. Built with Original Engineering standards, this 4-way valve block manifold integrates seamlessly with the Testo Smart App, providing real-time data logging, graphical progression displays, and automatic calculation of superheating and subcooling. The inclusion of the Testo 552i wireless vacuum probe and two Testo 115i wireless clamp temperature probes ensures a completely cable-free measurement environment, maximizing operational efficiency in confined or hazardous industrial spaces.
Technical Specifications
Manufacturer: Testo
Model Number: 557s
Part Number: 0564 5571
System Type: 4-Way Digital Manifold Kit
Pressure Measuring Range: -1 to 60 bar
Pressure Accuracy: ±0.5% full scale
Pressure Resolution: 0.01 bar
Temperature Measuring Range: -50 to +150 °C
Temperature Accuracy: ±0.5 °C
Vacuum Measuring Range (552i): 0 to 26.66 mbar (0 to 20000 microns)
Refrigerant Profiles: >90 pre-loaded (expandable via App)
Connectivity: Bluetooth 5.0 (100m range)
Protection Class: IP54
Battery Life: Approx. 250 hours
Weight: 1.24 kg (Manifold)
Industrial Application
The Testo 557s kit is specifically designed for large-scale HVAC/R infrastructure, including industrial cold storage facilities, commercial chiller plants, and multi-zone VRF/VRV air conditioning systems. In scenarios requiring precise evacuation and charging of fluorinated greenhouse gases or natural refrigerants, the 552i intelligent vacuum probe delivers micron-level accuracy to prevent moisture contamination. The system’s Technical Compatibility with over 90 refrigerants ensures versatility across diverse thermal management architectures.
Procurement and Lifecycle
Designed for rigorous daily use, the robust IP54 housing protects against dust and water ingress common in mechanical rooms. Standard Lead Time for this precision diagnostic instrument depends on regional distribution networks, but its integration into predictive maintenance protocols significantly reduces system downtime and extends the operational lifecycle of critical cooling assets.
Key Attributes
Pressure Gauge Type: Smart Vacuum Kit
Place of origin: China
Model number: 557S 0564 5571
Brand name: Testo
Customized support: OEM, ODM
Material: Plastics
Warranty: 1 years
Pressure Measuring Range: -14 to 870 psi (-1 to 60 bar)
Accuracy (at 71.6°F): ±0.5% fs
Temperature Measuring Range: -58 to 302°F (-50 to 150°C)
Accuracy: ±0.9°F
Probe Connections: 2 x plug-in (NTC)
Battery Type: 4 x AA batteries
Protection Class: IP54
Dimensions: 228.6 x 111.76 x 71.12 mm
Size: 48*28*15cm
Weight: 4kg
Packaging and Delivery
Selling Units: Single item
Single package size: 48X31X15 cm
Single gross weight: 4.000 kg











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