M. D. ARIFF and S. . Marjudi, “AirGuardian: Real-Time IoT-Based Air Pollutant Monitor System”, aitcs, vol. 6, no. 1, pp. 1871–1887, Jul. 2025, Accessed: Apr. 07, 2026. [Online]. Available: https://publisher.uthm.edu.my/periodicals/index.php/aitcs/article/view/16240