Costrada, A. N., A. G. Arifah, I. D. Putri, I. K. A. Sara Sawita, H. Harmadi, and M. Djamal. “Design of Heart Rate, Oxygen Saturation, and Temperature Monitoring System for Covid-19 Patient Based on Internet of Things (IoT)”. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, vol. 14, no. 1, Mar. 2022, pp. 54-63, doi:10.25077/jif.14.1.54-63.2022.