Compact transformers with low frequency DC output to reduce or eliminate voltage drop and conductive emissions (RFI). They are larger and heavier than AC versions, yet can be mounted up to 25' away from the last light fixture in the circuit. Compatible with most trailing (reverse phase) and leading edge (forward phase) dimmers rated for inductive loads (on primary line-voltage side). Not recommended for use with LEDs. Not compatible with DC fluorescents.