Sihotang HT, Simbolon RS. Design and Testing of an Energy-Saving Ultrasonic Rat Repeller Prototype for Open Agricultural Environments. J. Teknik Informatika CIT Medicom, [Internet]. 2024 Jul. 30 [cited 2026 Apr. 17];15(3):126-37. Available from: https://medikom.iocspublisher.org/index.php/JTI/article/view/1403