A unit includes a rail system having a trolley and first and second hook rails that are configured to mate with corresponding portions of a mounting board secured to a ceiling, a length between the first and second hook rails approximately equal to a width of the mounting board to insure a snug fit, an arm system configured to link to the rail system and having an upper tube section, a middle tube section and a lower tube section, an end of the upper tube section including slip ring wire connections to enable the upper tube section to rotate within the rail system, and an illumination unit configured to link to the lower tube section and having an end of the lower tube section including slip ring wire connections to enable the illumination unit to rotate with respect to the lower tube section.
