: Since March 11, 2020, the WHO has announced a global pandemic due to COVID-19, triggered by the serious, intense respiratory disease coronavirus-2 (SARS-CoV-2). Therefore, the necessity to design a temperature sensor-based breathing monitoring system increased. In this work, a new device is designed to detect the temperature of the exhaled air outside the human body is subject to the techniques of the Internet of Things and respiratory monitoring applications. These readings are recorded based on the patient’s condition diagnosed. In addition, the new device can monitor and record the change in the patient’s temperature by using the Internet of Medical Think application. As a result, this device would be able to trace changes in body temperature accompanied by the symptoms of the Covid-19 infection