Automation is a wide range of technologies that minimise human involvement in various home systems to improve the quality of life. Home automation systems are becoming more common and easier to build. It is possible to adapt them for remote control via the Internet or to connect them to a home automation system. Any intelligent system is based on an energy-saving system, with a focus on the potential of intelligent home automation systems. Modern air conditioners are usually equipped with a Wi-Fi module that allows the unit to be remotely controlled or connected to a home automation system. The problem arises with slightly older air conditioners that are already installed and operating in rooms where there is not even a built-in connector for the Wi-Fi module. One such example is the popular and very good MSZ-HJ series of air conditioners from Mitsubishi Electric.