Noviandy, Naufal Fadhilrozi, M. Mujirudin, and Harry Ramza. “Pengujian Respirator KN95 Menggunakan Sensor MQ-7 Berbasis Mikrokontroler Arduino UNO”. Prosiding Seminar Nasional Teknoka 6 (January 1, 2021): 223 –. Accessed July 16, 2024. https://journal.uhamka.ac.id/index.php/teknoka/article/view/10291.