UL Type C LED T5 Linear Replacement lamps are the most energy-efficient, reliable and dimmable solution for retrofitting fluorescent lighting f ixtures with G5 (mini bi-pin) sockets. The lamps are powered by a matching external driver designed for 1-, 2-, 3- or 4-lamp luminaires. To install the lamps, the fluorescent ballast is removed from fixture and the driver is connected to the sockets instead of the mains voltage, providing optimal long-term performance, safety and reliability.