“Prototype Pintu Otomatis Di PT. Kaltim Nitrate Indonesia Menggunakan Sensor PIR Berbasis Arduino Uno di Masa Pandemi Covid-19 ”, j. of Power electr. and renew. Energy, vol. 1, no. 1, Jun 2023, Diakses: 1 Juli 2026. [Daring]. Tersedia pada: https://jurnal.stitek.ac.id/index.php/JPER/article/view/52