Urmila T, Candra RA, Ilham DN, Harmayani H, Harahap MK. Design of Safety Worker Helmets Based on the Internet of Things. PERFECT [Internet]. 2024 Jun. 24 [cited 2026 Apr. 22];1(1):18-22. Available from: https://journal.dcircle.org/index.php/perfect/article/view/4