We discuss basic principles of organization of the information and measurement system for an automated monitoring in Siberia of the atmospheric properties governing the radiative processes. A sun photometer with a built-in microcontroller for measurement of atmospheric transmittance in 18 spectral intervals of the 0.3 to 4 m region is described. As compared with other similar devices, this photometer has a wider spectral range and is capable of regularly measuring the meteorological parameters at the observation site and self-controlling its basic characteristics (noise, thermostat operation, and others). A brief characterization is presented of the software for the unattended operation of the photometer