Design and implementation of an IoT-based real-time water level monitoring system of belik river at yogyakarta city. J. Soft Comput. Explor. [Internet]. 23 November 2025 [dikutip 26 Agustus 2026];6(3):206-14. Tersedia pada: https://shmpublisher.com/index.php/joscex/article/view/621