System for energy efficiency in educational buildings using IoT technologies. Journal Prospectiva, [S. l.], v. 23, n. 1, 2025. DOI: 10.15665/rp.v23i1.3768. Disponível em: https://ojs.uac.edu.co/index.php/prospectiva/article/view/3768. Acesso em: 20 oct. 2026.