International Journal of Engineering and Information Systems (IJEAIS)   Year: 2022 | Volume: 6 | Issue: 9 | Page No.: 7-11 Arduino Uno Microcontroller Application for Single Phase Electric Thief Monitoring Download PDF Ajub Ajulian ZM, Agung Nugroho, Bambang Winardi Abstract: One of the efforts to overcome the theft of electricity is to carry out Controlling the Use of Electricity (P2TL). But this is not done optimally because the number of officers is lacking. To overcome this, a tool is needed for monitoring areas prone to theft of electricity so that the work of P2TL can be maximized. The tool used utilizes the Arduino Uno Microcontroller as the Control center, the ACS712-20A current sensor to detect the amount of current entering the equipment, the keypad as an input to set the maximum current, LCD to display the maximum current, and LED lights to indicate if a disturbance occurs. By comparing the current from the mapping results of the meter record employee with the maximum setting current on the equipment, it will be known that the condition of the low-voltage network is being stolen or not.