[PRECISE ROOM SIZE CONTROL] The 13398-DO Dual Synchronous Velocity Slide Controller is designed to effectively control the size of the room slide in your RV, offering precise adjustments for optimal customization.[INTUITIVE LED INDICATORS] The rv slide controller equipped with 2 LEDs - one green and one red - this controller provides clear visual feedback on the current status and any faults, ensuring easy monitoring and troubleshooting.[DUAL SYNCHRONOUS SPEED CONTROL] Offering dual synchronous speed sliding out control, this advanced feature enhances the smooth operation and synchronization of your RV's slide-out mechanism, ensuring a seamless and efficient experience.[COMPATIBILITY & REPLACEMENT] The 13398-D0 slide controller is a replacement for the V-Sync II controller, specifically designed to be Compatible with Lippert In-Wall Slide-Out systems on RVs, providing a reliable and high-per formance solution for your slide-out control needs.Controller V-SYNC SCHWINTEK In-Wall Slide-Out 13398-DO, 14645Manufacturer's part number: 13398-DOProduct description: controller for V-SYNC SCHWINTEKcontroller for V-SYNC SCHWINTEK in-wall slide-out 13398-DO, 14645.Controller only, basic functions of the test unit.Replacement: for controller V-Sync II for Lipper in-wall slide-outsController version 13398-DO has replaced 13398-C2Precision Fit kit Color:Black & White Material: ABS Package Contents:1 x Dual Motor Synchronised Speed Slide Controller