Muhammad Ahmad Baballe, Mukhtar Ibrahim Bello. A security alarm system to detect intrusion using an Arduino, a GSM module, and a motion sensor. JTCIS [Internet]. 2021 Oct. 2 [cited 2026 Apr. 20];1(1). Available from: http://bookseries.ptti.web.id/index.php/jtcis/article/view/46