The Testo 552 digital vacuum gauge is designed for the evacuation of heat pumps, air conditioning, and refrigeration systems. This innovative digital vacuum gauge utilizes a sensor that requires no ...
The TestoKool 523 is a low-cost digital gauge set for contractors. It provides precise high and low side pressures (up to 725 psi, 0.1 psi resolution, 0.5 percent FS accuracy) and saturation ...