National Time & Signal first introduced the “Luma-Dial” clock line in 1932. Our 400 Series Luma-Dial Bezel clocks are UL listed and a complete clock ready for easy installation. Semi-Flush and Surface Mount versions are available. The dial can be either rear LED illuminated or front with LED/Neon. A protective lens and spun aluminum bezel offer dimension and character in addition to the protection of the dial and hands. 400 Series clocks are highly customizable, first select a synchronous or minute impulse clock, then choose from our wide array of hand styles, select one of our dial styles or design your own. Complete your clock system with an MC3-X10 or MC3-MI Master Clock Controller for automatic time correction for daylight savings adjustments and after power outages. Synchronous 400 Series clocks are also compatible with 970 Series manual controls. National Time clocks are indeed ‘Time Honored’ and made in the USA.