R K, K FL, A AE, Noprianto N. BEL RUMAH MENGGUNAKAN SENSOR ULTRASONIK DENGAN NOTIFIKASI BOT TELEGRAM: DOORBELL USING AN ULTRASONIC SENSOR WITH TELEGRAM BOT NOTIFICATION. sibc [Internet]. 2023Feb.28 [cited 2024Sep.16];16(1):11-20. Available from: https://sibc.upnjatim.ac.id/index.php/sibc/article/view/33