When comparing LED lighting options, you'll come across line-voltage and low-voltage LED light fixtures. Line voltage fixtures typically require 120 - 240V DC, while low-voltage LED fixtures require less than 100 W of power in order to comply with NEC limitations. You can use the Cence Class 2 low-voltage system for low-voltage applications, and the Cence Class 4 high-voltage system for line-voltage applications.