• Extra-large graphic displays, the testo Smart App and intuitive user guidance make measurements faster and easier than ever before.
• Compact, handy and rugged: The rugged housing with its sunken display handles its job reliably even under extreme conditions.
• Wireless measurement, uncomplicated documentation – with Bluetooth® 5.0, testo Smart App and free testo DataControl PC software.testo 557s Smart Vacuum Kit with four hoses consisting of testo 557s manifold including calibration protocol, testo 552i wireless vacuum probe, (2x) testo 115i wireless clamp temperature probes, batteries, case, and four hose set The next generation of digital manifolds. Thanks to Bluetooth® 5.0, the new digital manifolds with an extra-large display and rugged safety housing are also suitable for wireless measurement. You save valuable time and avoid stress in the installation, maintenance, and servicing of refrigeration systems and heat pumps. All important measurement programs are already stored in the manifold, as well as the right refrigerants for different systems. With the testo Smart App, documentation is fast and uncomplicated on site. Thanks to wireless data transfer, you can even have both hands free, for a smooth job. testo 550s / testo 557s The two new ones. First choice for every job. The new testo 550s and testo 557s digital manifolds with 2- or 4-way valve block make measurements faster and easier than ever before. Guided menus guide you through the measurement and allow the automatic recording of all important plant parameters. Bluetooth® probes for temperature, pressure and humidity can be connected wirelessly to the instrument, and together with the testo Smart App, provide even more flexibility. And thanks to its proven quality and great durability, you can rely on maximum precision.
• All results at a glance with the large graphic display
• Exceptionally compact and reliable thanks to the easy-to-handle, rugged housing with IP 54 protection class
• Simple, wireless measurement of vacuum and temperature via automatic Bluetooth® connection
• Even greater flexibility for your measurements and documentation with the testo Smart App

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