With Bluetooth capability users can now connect to our Brand New Testo Refrigeration App. Includes Testo 557 digital manifold, case, 2 x clamp probe, external vacuum probe, batteries and calibration protocol. Non sight glass.
- 4-way valve block
- New Bluetooth connectivity and App makes it easier than ever to manage your jobs
- Even more precise external probe for even more reliable performance
- Improved robust design and extremely convenient operation
- Measurement of low and high pressure as well as calculation of temperatures
- Simultaneous calculation Of superheating and subcooling in real time
- 60 refrigerants already stored in instrument