Abstract
This review paper delves into the design and im- plementation of GSM-based smart switches, which offer users the ability to remotely control electrical appliances using GSM networks. These devices incorporate a SIM card to facilitate com- munication through SMS commands and phone calls, enabling remote appliance control with ease. The fundamental components of this system include a microcontroller, a GSM module, a relay, and a dedicated power supply. The microcontroller, programmed in the preferred language, plays a crucial role in command processing and relay management. It serves as the system’s central processing unit, orchestrating relay operations to facilitate appliance on/off control. This approach provides users with a cost-effective, efficient, and accessible solution for home automa- tion and appliance management. The practical applications of this technology extend beyond convenience to include enhanced security and energy efficiency. Users can remotely activate or deactivate appliances, including lighting, security gates, and doors. This review paper not only fosters a deeper understanding of electronics and GSM networks but also highlights their potential to contribute to an improved quality of life, making it a subject of great interest within the realm of IoT, home automation, and agriculture firm. Index Terms—Keywords: GSM, SMS Commands, Motor, Smart Switch, Microcontroller.
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