Mitsubishi Electric QJ71GP21-SX Data Link Unit is a MELSEC-Q series interface module that provides data link capabilities for MELSEC installations. It serves as the data link interface within a Q-series configuration, enabling direct data exchange between the MELSEC-Q system and other compatible devices in the data link network. The part number QJ71GP21-SX identifies this dedicated data link interface unit designed for MELSEC-Q installations.
