Abdul Hannan, M., A. Mohd Zain, F. Salehuddin, H. Hazura, S. Idris, A. Hanim, A. AH, and N. Mohd Yusoff. “Development of LPG Leakage Detector System Using Arduino With Internet of Things (IoT)”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 2-7, July 2018, pp. 91-95, https://jtec.utem.edu.my/jtec/article/view/4432.