Potentiometer output, illuminated propulsion control head.
The 6555 is an illuminated control head, constructed from bronze and stainless steel but . The 6555 can also be mounted on a 4 switch base (6510), to integrate several propulsion functions such as station select and more.
The 6555 can be equipped with two potentiometers per handle to act as a fail-safe control input. Typically this control head is chosen with a control base as shown in the associated image. Note that this product is for interior use only.