Power management company Eaton, a 2016 ENERGY STAR® Partner of the Year, today announced the launch of the Halo® ML4 light-emitting diode (LED) Downlighting System for residential and commercial spaces. The compact and uniquely modular recessed downlight system includes a housing, LED module and a choice of a field-interchangeable, round or square, 2-inch aperture pinhole trim, available in multiple aperture styles, optical distributions and finishes.