An electronics enclosure and associated components form a self-contained, unitized assembly including control buttons and illuminated indicator elements, that can be mated as a single piece with an outer user interface control panel fascia. A front panel of the electronics enclosure provides a mounting location for various buttons and lighted indicators that will show through mating apertures provided in the control panel fascia. This may include light pipe collars and integral spring levers. Specially configured cup structures may be integrally molded at the ends of the spring levers to provide electrostatic discharge (ESD) protection. A mount of planar spring button pieces on the front enclosure panel, over the associated spring levers, results in an assembly incorporating two springs serving to bias the associated button to its return position, and eliminating any rattle or looseness of the parts.