The article discusses the possibilities of using wireless technologies of the Internet of Things at agricultural facilities using the example of ZigBee technologies. This topic seems to be relevant, since the smart farm market is growing very quickly. This is due to the fact that the use of automated control systems for humidity, temperature, acidity, electrical conductivity of the soil, etc. allows you to increase productivity, reduce costs. The aim of the research is to assess the potential communication range between ZigBee devices, and to analyze the factors affecting the quality of the radio channel. As the results of the work, it should be noted a mathematical study of radio channels at frequencies of 868 and 2400 MHz, analysis of factors affecting signal propagation. The article also provides practical recommendations for choosing a network topology and ZigBee equipment..