AUTOOL LM110 Digital Refrigeration Manifold Gauge is the auxiliary equipment for the installation, testing, and maintenance of refrigeration equipment, which can be applied to different scenario operations. (e.g. air conditioners and cold storage). It mainly has three major functions, Refrigerant Filling & Testing, Vacuuming Operation & Testing Leak, Testing of Refrigeration System Pressure, which can be more convenient to meet different needs. It is designed with viewable window and supports digital display, which can display the current pressure of the refrigeration system, the leakage pressure, and the detection time in real-time, allowing a more intuitive diagnosis of the leakage situation (refrigeration system).