ISTOK control cabinets are low-voltage complete devices ISTOK (NKU ISTOK), which are designed to automate water supply, are installed in wells, water intakes, pumping and sewerage stations, can be equipped with frequency converters, controllers, soft starters. Low-voltage devices ISTOK provide automatic regulation of pumps, maintaining the required technical parameters. Automation of pump control can significantly reduce the cost of introducing new and repairing out-of-order equipment for water supply systems. ISTOK control cabinets are used for frequency regulation of pressure, for pump control in the soft start and stop mode, maintaining the water level within the required limits. This is a complete device consisting of proven and reliable components, mainly imported. The installation can be carried out both indoor and outdoor, energy-saving mode at night, automatic pump change and other functions can be provided.