Utilization of RFID Cards in Attendance Systems and Energy-Saving Switches Based on the Internet of Things at Muhammadiyah University Sukabumi. protekinfo [Internet]. 2024 Aug. 28 [cited 2026 Oct. 12];11(2):20-7. Available from: https://e-jurnal.lppmunsera.org/index.php/ProTekInfo/article/view/9122