35140-ZVL-003 Cont Unit (315MHz) - Overview. The 35140-ZVL-003 Cont Unit (315MHz) is an essential control unit designed specifically for Honda marine engine systems. Functioning at a frequency of 315MHz, this unit supports wireless communication and control within Honda's advanced marine systems. It plays a vital role in ensuring reliable operation by seamlessly integrating with the vessel's electronic control systems, thereby maintaining optimal functionality and durability.. Key Features. Genu