Parametric searches have been added to the Web site of UltraVolt Inc., a manufacturer of high-voltage power supplies. They enable users to search for specific characteristics and to compare results to find the appropriate modular or rack-mount power supply for their applications. Search results include links to product data sheets in pdf and html formats. The basic search includes only device type, power, nominal output current, and output and input voltage in the parameters. For users with more precise needs, the advanced search has drop-down menus for derated input, and standard package type, footprint and volume, as well as a table of 18 options and accessories.