The Griswold FX model Rudolph 16 is a 16 channel dimming light controller. It is designed to control 110 and 220 volt holiday lights. The controller receives illumination level information via the DMX512 protocol. It can be controlled by a DMX512 enabled PC or a DMX512 lighting console. Up to 32 Rudolph 16s can be daisy chained together to form a fully populated DMX512 universe.