This paper introduces the design and prototype of a new home automation system that utilizes GSM technology as the network infrastructure to connect its components. The proposed system is composed of two primary parts: the first is the GSM module, which acts as the core of the system, managing, controlling, and monitoring the user’s home. Users and system administrators can connect to the GSM locally to access devices and manage system functions. The second part is the hardware interface module, which provides the necessary interface for relays and actuators within the home automation system. The mobile phone, originally designed for making calls and sending text messages, has evolved into a versatile device, especially with the advent of smartphones. In this study, the researcher develops a home automation system using GSM and Arduino, allowing users to control household appliances by simply sending SMS commands through their GSM-based phones.This paper states that a smartphone is not necessary; but an old GSM phone can effectively be used to turn home electronic appliances on and off from any location. The proposed system offers greater scalability and flexibility compared to commercially available home automation systems.