Hasni, Noorathirah, and Faiz Asraf Saparudin. “Water Level Monitoring System User Interface Using Node-Red”. Progress in Engineering Application and Technology 4, no. 2 (December 21, 2023): 403–414. Accessed May 20, 2024. https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/13055.