The article is dedicated to Internet of Things (IoT) technologies that allow connecting various devices and sensors via the Internet. Effective customer interaction with IoT systems requires smart interfaces that take into account the context and human needs. Chatbots are considered that can provide users with convenient support, process data from sensors, and visualize them. An IoT system consisting of sensors, a cloud platform for data storage and processing, a database, and a chatbot interface for user interaction is considered. The automatic indoor temperature control system uses sensors that transmit data to the cloud, where it is processed and stored. Users can interact with the IoT system through a chatbot that understands commands and responds accordingly. The chatbot has been tested, showing that it can autonomously maintain the optimal temperature, changing it according to user commands, and responding to critical situations. The results of the study demonstrated that the use of a chatbot allows you to create a human-centered automated system.