This LED Side Light from Miller Industries is a dual-purpose light that willoperate as a marker light and when the docking light function is activated, thelight will operate as an LED flood light. It will also function as a markerlight and flasher light when used with a Flasher Control Power Unit (notincluded). Sold as Each Kit with Flasher Control Power Unit Included- Part#: 50006464 Replacement Flasher Control Power Unit Only – Part #: 124004140