Sylvania SubstiTUBE® CURVALUME® IPS LED T8 lamps are an energy saving alternative, designed to replace traditional fluorescent T8 lamps. These shatter-resistant LED T8 lamps contain no mercury, provide instant light and a uniform light distribution. Engineered to operate on existing instant start and select programmed rapid start electronic T8 ballasts, these lamps minimize labor and recycling costs. Since the SubstiTUBE CURVALUME IPS LED T8 is not affected by switching cycles, these lamps can be used with occupancy or vacancy sensors for optimal energy savings. Install a new QHE Instant start ballast with the SubstiTUBE® CURVALUME® IPS LED T8 lamp for optimal performance and to take advantage of the QUICK 72SUB+ system warranty.