Аннотация:The necessity of efficient use of electricity in lighting the premises of universities, office centers, etc. is justified. A photometric system for monitoring and controlling the illumination of premises at various points is developed. An original solution is proposed for the construction of the system architecture, which allows you to more effectively monitor the state of illumination in various areas of the premises using photodiodes. Based on the comparison of the measured values of illumination using the make design a photodiode system, at optimal values of voltages a lighting element is determined at different points. An experimental study of the operation of our system in the classroom and scientific laboratory showed an saving of electric energy of more than 15.5 % compared to the same period (at that time the system was not used).