The principle of the technology is an intelligent control unit based on an industrial computer (PLC). This control unit of the stable cooling system automates the switching on and off of the water supply to the cooling showers. The output is activated based on movement detected by the motion sensor. The control unit programmatically determines the time and integrity of switching based on the set operating parameters. These operating parameters can be continuously changed. Configuration is handled by wireless communication. The solution is implemented in a centralized way.