Z. H. I. . Rokhmad and S. Mohd Shah, “Portable Environmental Monitoring System using IOT (PEMS)”, jeva, vol. 5, no. 1, pp. 77–90, Jun. 2024, Accessed: Mar. 11, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/jeva/article/view/16612