Yuliza, E., Ekawita, R., Vionita, V., Fauzi, M. K., Sari, V. F., & Rahmayanti, H. D. (2021). PHYSICAL DISTANCING ALARM SYSTEM BASED ON PROXIMITY SENSOR AND MICROCONTROLLER. Indonesian Physical Review, 4(2), 79–85. https://doi.org/10.29303/ipr.v4i2.85