Universal AC input from 120 - 277 VAC +/-10%. Built-in active PFC function. Output current programmable (50mA per step). 2-channel output for Tunable White color temperature control. 1-channel output for Dim to wram or Brightness control. Optional Auxiliary Output: 12V/30mA. Flicker free comply with California Title 24. Surge protection: L-N 2.5KV / L- PE 4KV. Built-in adaptive Temperature Protection. RoHS Compliant.