MELINDA, Melinda; YUNIDAR, Yunidar; KHAIRIA, Syaidatul; MIFTAHUJJANNAH, Rizka; SAKARKAR, Gopal; BASIR, Nurlida. Smart Door Locking System for Children Using HC-SR04 and IoT Technology. Jurnal Nasional Teknik Elektro, [S. l.], v. 14, n. 2, p. 73–80, 2025. DOI: 10.25077/jnte.v14n2.1293.2025. Disponível em: https://jnte.ft.unand.ac.id/index.php/jnte/article/view/1293. Acesso em: 27 feb. 2026.