Voice recognition, Smart homes, Home automation, IoT, Arduino Uno, MCU node, GSM, Security, Energy Smart houses are necessary in today's environment. The days of only seeing smart homes in science fiction films are long gone, since they have made major strides in the last few decades. Home automation has completely altered the meaning of life in comparison to previous eras. Each of our household appliances, including the TV, air conditioner, lights, fans, and more, used to be controlled by a different remote control. Another issue is that balancing all those remote controls can occasionally be uncomfortable, particularly for the old and disabled. In the twenty-first century, everything is mechanized, even homes and factories. A home that has been outfitted with technology to provide services catered to the needs of its residents is known as a "smart home." The purpose of this article is to conduct a systematic review of the most recent smart home literature and to assess research and development in the field. In addition to providing a full review of the development and features of the current smart home system (SHS), this article provides a deep understanding of the latest hardware and trends. The report then delves deeply into a few of the important services and advantages that the SHS provides. Fans, screens, air conditioners, lamps, and other appliances are all controlled via home automation. In addition to saving time and energy, home automation decreases the need for human labor. It also serves as a protective measure. Elderly people and people with physical disabilities can easily transition from the centralized unit to household appliances. Voice-controlled home automation allows users to control their home's appliances with their voice. The control device receives voice commands via a smartphone. All of these systems and technologies are reviewed in this study.