Uwamahoro, R., N. Mduma, and D. Machuve. “A Battery Voltage Level Monitoring System for Telecommunication Towers”. Engineering, Technology & Applied Science Research 11, no. 6 (December 11, 2021): 7875–7880. Accessed June 30, 2024. https://etasr.com/index.php/ETASR/article/view/4550.