Delpiero, Muhammad Balkis, Muhammad Muttaqin, and Hafni. “Design of an Anti-Intruder Security Sensor on a Home Door Based on the Internet of Things Using a Reed Switch Sensor (Magnetic Door) and a NodeMCU Microcontroller”. Instal : Jurnal Komputer 17, no. 12 (February 28, 2026): 836–845. Accessed April 20, 2026. https://journalinstal.cattleyadf.org/index.php/Instal/article/view/473.