Testo's 557 Digital AC/Refrigeration System Manifold features four valves and a built-in vacuum gauge

Testo's 557 Digital AC/Refrigeration System Manifold features four valves and a built-in vacuum gauge. The 557 is built for installing, analyzing and maintaining all A/C, heat pump and refrigeration systems. In addition, the 557 will also perform leak tests on AC/R systems with temperature compensation. The 557 has two NTC temperature probe inputs and can simultaneously measure and display superheat and sub cooling in real time. In addition, it displays high/low side pressure, line temperature and calculates saturation temperatures. The testo 557 RSA comes standard with two clamp probes, integrated hanger-hook, built-in hose holders and a hard carrying case.




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