Simbolon, Michael, Heru Wijanarko, Fitriyanti Nakul, and Rahmi Mahdaliza. 2021. “Penerapan Komunikasi Nirkabel LoRa Pada Sistem Pencatat Kehadiran Portabel”. Journal of Applied Electrical Engineering 5 (2), 30-35. https://doi.org/10.30871/jaee.v5i2.3096.