Requires magnetic metal halide ballast. Will not work with electronic ballast. For M59 and M155 only. Do not install into high pressure sodium or mercury vapor. Do not bypass ballast as fully functional unit is required.
This bulb has been used in relation to S.A.D. (Seasonal Affective Disorder). eLightBulbs does not diagnose, prescribe treatment or guarantee results. Although this bulb is available to the public, any medical applications, diagnosis or prescriptive treatment must derive from a qualified medical professional.