Bring your layout to life with a Sequencing Light Hub. Add up to four Just Plug lights that individually sequence on and off. Includes dimmer and speed controls. Turn sequencing off to use as a Light Hub. Add an optional Auxiliary Switch for convenient operation. Just Plug™ Lighting System No electrical knowledge or special tools needed...just plug and you're done! The Just Plug™ Lighting System is a quick and easy way to add realism and interest to new and existing layouts and other projects. Individual bulb brightness can be controlled, and the modular design allows for easy expansion. Just Plug is compatible with DCC and works for any scale.