SEE , Yuen Chark; HO , En Xiang. IoT-Based Fire Safety System Using MQTT Communication Protocol. International Journal of Integrated Engineering, [S. l.], v. 12, n. 6, p. 207–215, 2020. Disponível em: https://journal.uthm.edu.my/index.php/ijie/article/view/6607. Acesso em: 7 aug. 2026.