The COVID-19 pandemic, caused by the SARS-CoV-2 virus, has increased the demand for oxygen on a global scale. Oxygen is especially needed for the treatment of COVID-19 patients who have difficulty breathing or who have severe acute respiratory distress syndrome (ARDS). Oxygen purifiers play an important role in providing supplemental oxygen to patients who need it. Oxygen purifiers can be used to remove contaminants and other harmful substances from oxygen, thereby producing safe and clean oxygen for a variety of applications. In this study, we made an oxygen purifier using 1 unit of electric compressor motor free of lubricant or oil, 2 units of filter media containing 13X zeolite media and an air valve (solenoid valve) which is controlled by a microcontroller via an 8 channel relay module and monitored by LCD 20X4 via Oxygen sensor type OOM202. The results of our research are in the form of a device that can produce an oxygen gas output purity of 70.09% with a reading accuracy of 0.04% at a production of 0 to 5 liters per minute with a system operating pressure of 30 psi (2,068 Bar).