Habibi, M., Henny, H. and Sukma, I. 2026. INTERNET OF THINGS-BASED AIR QUALITY MONITORING SYSTEM USING ESP32 AND PPD42 SENSOR TO SUPPORT OCCUPATIONAL SAFETY IN THE CRUSHER ROOM AREA. Simtek : jurnal sistem informasi dan teknik komputer. 11, 2 (Nov. 2026), 554–559. DOI:https://doi.org/10.51876/simtek.v11i2.1890.