These cables for the Nucleus-M give you run/stop capabilities in camera systems that support it. Simply plug the 7-pin end of the cable into one of the motors and the other end into the R/S port of the camera. Note that this cable was specifically designed for the Nucleus-M so the R/S function only works with the Nucleus-M's own hand unit and hand grips. Packing List: (1) 68.6cm cable (1) Male connection (1) 7-pin Male connection