Gurum Ahmad Pauzi 

Department of Physics, University of Lampung, Indonesia

Mutiara Maharani

Department of Physics, University of Lampung, Indonesia

Pulung Karo Karo

Department of Physics, University of Lampung, Indonesia

Yanti Yulianti

Department of Physics, University of Lampung, Indonesia

Ayu Aprilia

Department of Physics, University of Lampung, Indonesia

Sri Wahyu Suciyati

Department of Physics, University of Lampung, Indonesia

DOI: https://doi.org/10.19184/cerimre.v8i2.53693

ABSTRACT 

This research was conducted to design a priority control system for efficient electricity usage by detecting current and voltage using ZMCT103C current sensor and ZMPT101B voltage sensor, then determining the priority sequence of household appliances using the C4.5 Algorithm. The designed tool utilizes ZMCT103C, ZMPT101B, NodeMCU8266, relay, and Arduino Uno. Monitoring and control can be performed in real-time using a website. Testing has shown that the priority control system tool has been successfully implemented and can measure current and voltage with high accuracy, as indicated by test data showing relatively small errors in current and voltage values not exceeding ± 5%. The prioritization sequence of household appliances includes the washing machine as the primary priority, followed by the refrigerator and water pump as the second priority, and the iron as the third priority. However, the rice cooker can be turned on simultaneously due to its low gain and entropy, thus not causing thermal shutdown.

Keywords: Decision Tree, C4.5 Algorithm, entropy, Gain, ZMCT103C and ZMPT101B.