Powerbox high voltage light controls are built by hand in the USA with a quality first philosophy. Powerboxes are direct wired to allow maximum current flow with no resistance bottlenecks created by current being passed on from one outlet to the next. If one outlet goes out the others continue to function. All Powerboxes are built with a heavy duty relay and Ground Fault Circuit Interupt (GFCI) protection. Powerboxes include a digital timer that operates digital and core and coil ballasts. An optional trigger cord for all models and a 50 amp to 60 amp upgrade for hardwired controls are also available.