Electronic ballasts for compact fluorescent lamps offers maximum application flexibility, operating 1 or 2 CFL 55 watt lamp types, as well as twin tube, PL-H, quad and triple tube, circline, 2D, and long twin tube (Biax/PL-L) lamps. The ballasts feature programmed start technology, prolonging lamp life in frequent on-off applications and multiple input voltage technology, enabling operation at any input voltage from 120 to 277 volts or 277 to 347 volts, 50/60 Hz. Designed for optimal thermal performance, these metal can ballasts offer a case temperature rating of 90°C. All of our compact fluorescent ballasts are built with a lamp end-of-life protection circuit, a safety feature that automatically shuts off power as the lamp approaches its EOL. This feature prevents overheating and protects the ballast.