Costrada, A. N.; Arifah, A. G.; Putri, I. D.; Sara Sawita, I. K. A.; Harmadi, H.; Djamal, M. Design of Heart Rate, Oxygen Saturation, and Temperature Monitoring System for Covid-19 Patient Based on Internet of Things (IoT). J. Ilmu Fis. 2022, 14, 54-63.