Single Pack. Accepting DCC, DC or AC from 6 to 20 volts as a power input, and with a mulit-turn potentiometer for really fine brightness control, these are a sophisticated but very easy-to-use way to get perfect control of lighting around your layout.
DCD-LCB can control 6 original DCCconcepts incandescent lighting products or 12 DCCconcepts Alpha Building Lighting Discs. Complete with fixing screws.
Input: The voltage range is 6-25v DCC, DC or AC. Use the lowest available voltage for best efficiency.