Electronic power conversion products, namely, [ DC to DC power supplies,] DC to AC power supplies; high frequency power supplies; battery conditioners; [ uninterruptible power sources, namely, AC power sources that provide back-up AC power, primarily comprised of a battery, DC to AC inverter, battery charger, and load transfer switch; ] solar controllers, namely, electronic circuits that control the voltage and current provided from a photovoltaic panel to other connected devices; grid connected solar power supplies, grid connected power supplies, peak power trackers which control the flow of power from a photovoltaic panel, ensuring operation at the point of maximum efficiency; inverters, switch mode inverters, DC to AC inverters; cogeneration inverters; [ digital control and interface systems for power supplies consisting of electrical and electronic devices for control, regulation and monitoring of electronic power supplies and power converters, namely, plug-in boards and external self contained modules, digital control technology sub-assemblies, namely, plug-in boards, digital interface devices for the monitoring of electronic power supplies and power converters, namely, plug-in boards, ] digital interface modules for the control, regulation and monitoring of electronic power supplies and power converters

AC power plants, DC power plants, and stand-by power plants, grid connected solar power plants, and grid connected power plants