Mhd Rizki Syahputra, Adi Sastra Pengalaman Tarigan and Dr. Rahmaniar (2022) “Performance Analysis of Energy Smart Control During Idle Time at Iot-Based Vocational School (Smk) Laboratory”, iJournals:International Journal of Software & Hardware Research in Engineering ISSN:2347-4890, 10(6). doi: 10.26821/IJSHRE.10.6.2022.100609 .