Instant start,flicker-free and no irritating noise , CE RoHS 1 drive two, save space and cost Electronic ballast for T8 tube light, we have 1 drive two :2 X 18w, 2X 30w, 2X 36wLife up to 3 years, 110v-127v, 220v-240v, 220-240V T8 2X18W Electronic ballast