Rivaldi R. PROTOTYPE OF AIR PURIFIER TO REDUCE AIR CONTAMINANTS AND ELIMINATE INSECTS BASED ON ESP32 AT UNIVERSITAS HARAPAN MEDAN. JUSIKOM PRIMA [Internet]. 2022 Sep. 8 [cited 2026 Apr. 4];6(1):82-6. Available from: http://139.162.50.187/index.php/jusikom/article/view/2819