Type C T8 Tubes use an external (remote) driver to power the LED. The ballasts are removed, which means electrical modifications are still required. However, the operation is safer, since the low-voltage driver is hooked to the sockets and not the line voltage. One driver can power multiple LED tubes. This system is similar to how LFLs operate now (ballast and lamps).The fixture input wires must be connected to the LED driver and the driver’s low voltage output wires must then be connected to the sockets before installing the new LED Tubes.One driver for 1,2, 3, or 4 LED tubes available.