Smart Monitoring System for Air Conditioning Units in Classrooms at Institut Teknologi Kalimantan Using IoT Technology: Sistem Monitoring Air Conditioner (AC) Pada Ruang Kelas Institut Teknologi Kalimantan Berbasis Internet of Things (IoT). (2026). SPECTA Journal of Technology, 10(1). https://doi.org/10.35718/specta.v10i1.1018