Design of digital kWh-Meter to top-up the electric pulse by automatically using Relay Module Based on SMS and Arduino Uno

This study aims to design a digital kWh-meter prototype top-up the electricity pulse by automatically using relay modules based on Short Message Service (SMS) and Arduino Uno. The utilization of 12 substitute keypad input function in kWh meter is our basic idea this study. method we used replace with module integration between circuit path board as an electric switch that can activate when gets trigger from In study, user wants charge pulse, will send voucher number GSM SIM900A via SMS, then it be processed Then Uno activated so fill kWh-meter. result success through SMS successful filling up 98%. usefulness change original for