Muhammad Arifin Ardi, Muhammad Nurkahfi, and Fellian Helmi Pristianto. “Internet Of Things Sebagai Monitoring Gas Sulfur Oksida”. SinarFe7, vol. 2, no. 1, May 2023, pp. 54-58, https://journal.fortei7.org/index.php/sinarFe7/article/view/398.