Salas, Josamae, and Allain Jessel Macas. “Design and Development of a PID-Controlled Home Air Quality Monitoring and Purification System”. Innovation in Engineering 2, no. 2 (August 16, 2025): 106–113. Accessed April 22, 2026. https://ie.rlsociety.org/index.php/ie/article/view/38.