The PES120ET5-E120T2 ballast uses electronics circuits technology for efficient energy savings output voltage inversion. This ballast utilizes the lattes state of the art semiconductors and capacitors with low operating stresses and high temperature ratings, assuming high reliability, superior performance and longer lamp life. This light weight, efficient operation ballast provides high lumen output, with up to 20% energy savings when comport to convention magnetic ballasts. Parallel operation provides on lamp operation when the other lamp is removed.