CFM04S 4W AC-DC Modules Cincon CFM04S 4W Open-Frame or Encapsulated AC-DC Modules offer an 85VAC to 305VAC universal input range and up to 82% efficiency in a compact 0.76' x 1.56' package. The Cincon CFM04S 4W Open-Frame AC-DC Modules are Class II power modules with <,0.075W no-load power and continuous short-circuit and over-voltage protections. The series provides options in PCB or connector terminations.