The Testo 549 (0560 0550) Refrigeration Digital Manifold is a robust tool for daily work on refrigeration systems and heat pumps. The rugged 2-way metal valve block with 3 connections and 3 hose parkers allows you to work quickly and easily. The more robust housing, with a metal frame around the display, protects Testo 549 even more reliably from impact. The suspension hook guarantees secure attachment of the digital manifold during measurement. The Testo 549 is excellently suitable for commissioning, service and maintenance. Furthermore, with optional temperature probes, the Testo 549 provides accurate, real-time superheat and sub-cooling at the push of a button. Thanks to additional features such as the automatic heat pump mode, which eliminates the need to switch over the hoses, and the temperature-compensated tightness test function, working on refrigeration systems and heat pumps is easier than ever before.