Ubin, Aizan, and Siti Azira Jamrus. “Air Quality Monitoring System Using Internet of Things (IoT)”. Evolution of Information, Communication and Computing System 2, no. 1 (January 19, 2022): 19–28. Accessed April 7, 2026. https://publisher.uthm.edu.my/bookseries/index.php/eiccs/article/view/23.