Osram SubstiTube IS LED T8 lamps are an energy-saving replacement for traditional fluorescent T8 lamps. Engineered to operate on existing instant-start electronic T8 ballasts, the lamps minimize labor and recycling costs. The shatterproof LED T8 lamps have a 50,000-hour rated life and contain no mercury while providing instant and uniform light distribution. Occupancy and vacancy sensors can be installed with the existing instant-start ballasts.