Dual Motor Synchronous Velocity Slide Controller 13398-D0 for V-Sync II Slide controller can control the RV's room slide to set the room size 2 LEDs, 1 green and 1 red, are provided to indicate current controller status and faults. For motor-specific faults the green LED blink 1 time for motor 1, and 2 times for motor 2. The red LED blink from 2 to 9 times depending on the error code. Functions: quick return to better working order, minimising downtime and allowing you to get back on the road immediately. Part Number:13398-D0 name:Velocity Slide Controller Fitment: for Controller V-Sync II for in-Wall Slide-Out on RV Colour:Black Material:Plastic+Metal Package Contents: 1 x Velocity Slide Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.