This study aims to develop the Ozone generator controlling system for sterilization in In-Patient room. Nowadays, there are many methods that the hospital uses for sterilizing the In-Patient room such as the ultraviolet light, manual cleaning and disinfection, hydrogen peroxide vapor, and Ozone sterilization. Using ozone sterilization is one of the
most effective ways. However, after the ozone was generated by the ozone generator, it is difficult to maintain the concentration of the ozone in the air, especially, the ozone concentration levels that each generator produces. Therefore, developing the ozone controlling system by using the sensors to indicate the level of ozone concentration can accurately control the amount of ozone generated. Under the circumstances of industry 4.0, the controlling system was digitalizing developed by Raspberry pi. The system was validated in the real experiments by monitoring