“Rancang Bangun Sistem Monitoring Kulkas Ecogreen Secara IoT Berbasis Mikrokontroler ESP32”. Jurnal Litek : Jurnal Listrik Telekomunikasi Elektronika 22, no. 2 (October 8, 2025): 149–156. Accessed October 9, 2025. https://ejournal.pnl.ac.id/index.php/litek/article/view/77.