mazlan, afiq aiman and Hairulazwan Hashim (2024) “Monitoring System with Certified and Non-Certified Device Comparison”, Progress in Engineering Application and Technology, 5(2), pp. 29–46. Available at: https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/17209 (Accessed: 8 April 2026).