Wijaya MD, Warsito T, Wasito B. Rancangan Remote Monitoring Marker Beacon Merk Normarc Type NM7050 Menggunakan Optocoupler PC817 Berbasis Arduino Nano Dan Web Server. SNITP [Internet]. 2019Mar.27 [cited 2024Nov.20];1. Available from: https://ejournal.poltekbangsby.ac.id/index.php/SNITP/article/view/160