LED light engines for luminaire makers: PrevaLED round modules for downlights and spotlights, linear and area boards for office, retail and industrial luminaires, and high-power PrevaLED BRICK modules for street, area and high-bay lighting. Several follow Zhaga dimensions, so they interchange with other makers' modules, and many accept third-party optics such as LEDIL. Lifetimes reach up to 100,000 hours (L80 B10), depending on the module and its operating temperature.