S. Gopal Krishnan and W. N. H. Wan Kairuddin, “IoT Indoor Air Quality Monitoring System with Android App Integration”, EEEE, vol. 6, no. 2, pp. 223–230, Oct. 2025, Accessed: Apr. 07, 2026. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/20976