A. Kunlerd, B. Nabumroong, N. Vongvas, T. Lakharapol, R. Ruttanaprasert, and K. Burana, “A Solar Powered Ultrasonic Water Level Monitoring System with IoT Type for Small-Scale Agricultural Water Management ”, Recent Sci. Technol., vol. 18, no. 2, p. Article e269459, Apr. 2026.