Testo 557s (4-way valve block)

Easier, more flexible measurements and documentation: With the testo 557s digital manifold with Bluetooth and 4-way valve block, you‘ll be ideally equipped for your measuring tasks in the field of commissioning, servicing and maintenance of refrigeration and air conditioning systems and heat pumps.

Key Features:

• 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
• A3 and A2L compatible and over 90 stored refrigerants
• Even greater flexibility for your measurements and documentation with the testo Smart App