testo 557s – start efficient wireless measurements for refrigeration, air conditioning systems, and heat pumps immediately with a fully cable free setup. The included Bluetooth vacuum probe lets you check vacuum levels without hoses, making your workflow faster and cleaner.
Main Features
– Fully wireless measurement capability supported by Bluetooth probes and a large graphic display that keeps all readings visible at once
– Compact, durable IP 54 housing designed for reliable performance in demanding field environments
– Streamlined temperature and vacuum measurement through automatic Bluetooth connection plus easy documentation using the testo Smart App
– A3 and A2L compatibility with access to more than 90 stored refrigerants
Ideal Applications
– Suited for refrigeration and air conditioning service
– Suitable for heat pump commissioning and maintenance
– Works seamlessly with additional optional testo Smart Probes for expanded wireless diagnostics
Standard set: testo 557s digital manifold, batteries, calibration protocol, 1 x testo 552i, 2 x testo 115i, transport case, testo Smart App, Instruction manuals.
