The 13398-D0 14645 Slide Controller Dual Synchronous Velocity is a controller designed specifically for the Lippert V-Sync II system. Manufactured in China, this dual synchronous velocity controller serves as a replacement part for the V-Sync II system, providing users with a convenient solution for controlling the slide function of their RV, trailer, or camper. This controller is a valuable addition to the accessories available for these types of vehicles, offering functionality and peace of mind for users looking to maintain their systems.