This paper describes actual problem of modernization and process automation of agro-industrial complex. Agriculture, farms, private agricultural complexes are more and more supported at the state level over the past years in Russian Federation. This is due to the new import substitution policy in food production. The main purpose of modernization of process control methods in agriculture is to increase the efficiency of manual control and decision-making by the operator. Also, modernization is expressed in reducing the duration of the processes, increasing accuracy and minimizing of energy consumption. The objective of this study is to create an effective monitoring model to optimal decision-making of management of processes in agriculture. In this work authors present a model of control of measuring components using the Internet of things technology. This model allows to get an estimate of the values from the measuring sensors with the deviations of environmental conditions. The algorithm of control of measuring components and processing of indications of sensors is considered in detail.