Hanggara, Indira Prabawati, and Frida Agung Rakhmadi. 2021. “Design of Prototype Home Door Security System Based Solenoid Door Lock, Magnetic Sesor, Microcontroller Nodemcu Esp8266 and Blynk Application”. Proceeding International Conference on Science and Engineering 4 (February):22-23. http://sunankalijaga.org/prosiding/index.php/icse/article/view/613.