Sasmojo, Duta Widhya, Wisnu Broto, and Doni Chesa Renaldi. “DETECTION AND MONITORING SYSTEM ON THE PACKAGE RECEIVING BOX”. Spektra: Jurnal Fisika dan Aplikasinya 6, no. 3 (December 30, 2021): 151 - 158. Accessed April 8, 2026. http://103.8.12.212:33180/unj/index.php/spektra/article/view/23034.