6-channel relay control board

Implemented using shift registers, meaning it can scale up to 64 relay channels. The board for placing the controller is universal-modular, designed for 20 contacts, for soldering STM32 (LQFP32). Connectors, fuses for each channel, and a pulse DC-DC converter from 40 volts to 12 are provided for the correct operation of the relays in any conditions.