Belen Septian, Misbahuddin, M. and Arkan, F. 2022. FREERTOS BASED AIR QUALITY MONITORING SYSTEM USING SECURE INTERNET OF THINGS. Jurnal Teknik Informatika (Jutif). 3, 1 (Feb. 2022), 147-153. DOI:https://doi.org/10.20884/1.jutif.2022.3.1.172.