The SARS-COV-2 Rapid Detection System is a SARS-COV-2 Electro-Spectroscopy detection system. The preliminary design of this system was studied theoretically in this paper. This system can detect the existence of sub-micro impurity particles in the human exhaled air, based on the unique shape, dimensions and density of these sub-micro impurities, such as viral particles, including CORONA viruses. This information is carried out by electron current buildup forming Electric Current-Spectrum (ECS) distinguishing the contents of the exhaled air. The design is based on Flashing Ratchet Potential (FRP) and beam of free electrons passing through the electrodes of the FRP. The ECS is characterized by curve deviations caused by interaction of low energy electrons’ (-β radiation) with matter, which depends on the matter’s shape, dimension and density. This interaction causes a scattering (delaying) or absorption of the electrons by matter, by elastic or inelastic collisions, respectively. The ability of FRP to drift back the delayed electrons to their initial points can be used to characterize the produced ECS. The effect of delayed electrons can be amplified to form a visualized deviation in the ECS by electron multiplication system and can be interpreted into distinguishable SARS-COV-2 Barcodes or Fingerprints.