in this modern era, Electricity is the energy needed for human life. The dominant human needs for using electronics, lighting and running the machine make the electricity has an important thing. All of them makes electricity must be supplied so that the tools can work. Many of electronics used to make electricity credit on kWh meter prepaid will quickly run out. The impact of power loss that happens repeatedly because depletion of electricity credit makes electronics has short life, this is often happens because the user cannot monitor kWh meter prepaid. In this project, system can also monitor the status of electricity credit, abnormal incident and the estimated time of electricity credits running out. This system uses 3 photodiode sensors. It's for detecting pulse status when the pulse is at a minimum condition of 10 kWh, detecting an abnormal incident in case of damage or problems and detection estimated pulse depletion time to find out how long the electrical electricity credit has run out. This system is designed to detect the change of kWh status from the indicator LED at kWh meter. The receive data will be processed to determine the condition of the remaining pulse or kWh meter state. The Controller of this system uses microcontroller which receive data from sensor. This system successfully displays data on LCD and LED indicator and can send data to user number via SMS when entering the minimum limit, while the pulse at 7, 4 and 1 kWh and gives the estimated timeout of deplection pulse. With this monitoring system created is expected to reduce anxiety about the depletion of electricity pulse when leaving the machine or electronic who always standby without supervision
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