Muhammad Fariq Serzali and Mohd Badrulhisham Ismail, “UVC Hand Sanitizer with Monitoring System”, JET, vol. 10, no. 1, pp. 98–102, Nov. 2022, Accessed: Jun. 14, 2026. [Online]. Available: https://ejournal.unikl.edu.my/index.php/jet/article/view/324