Industrial SMK-374 Printed Circuit Board Card

The SMK-374 PCB Card (SMK-AB) is an industrial control PCBA designed to handle relay switching, signal processing, and equipment control within marine and industrial automation systems. It is an OEM replacement module with chassis or enclosure mounting and application‑specific relay and interface circuitry on an industrial electronic control board. Typical applications include marine monitoring systems, process control panels, machine automation equipment, and embedded machine controllers requiring reliable PCB assemblies for operational control. Available as surplus or refurbished inventory, this part is identified by model SMK-374 and secondary number SMK-AB, with origin listed as China or India depending on production variant, and common replacements include SMK-370 and SMK-373 PCB cards.