The NEW testo 557s digital manifold with Bluetooth and a 4-way valve block features a large graphic display, a compact, robust housing, guided measurement menus and the testo Smart App. It proves to be a reliable partner for your commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps.
- All results at a glance thanks to the large graphic display
- Exceptionally compact and reliable thanks to the easy-to-handle, robust housing with IP 54 protection class
- Greater flexibility for your measurements and documentation with the testo Smart App
- With guided measurement menus for target superheat, vacuum and pressure loss
- Convenient refrigerant management in the App with favourites and automatic updates