The Effects Controller is designed to work in conjuction with DDBs. The EC has built-in 2D light effects or can read effects from files on an SD card. The EC can control lights connected to 3 or 4 DDBs (4 if running standalone, 3 if the EC is chained to another EC). it can control up to 4200 lights max.
ECs can be daisy chained together to form larger displays that are completely synchronized.
ECs connect to DDBs or other ECs via standard CAT5 cabling (however they are not ethernet compatible. Do not plug into ethernet devices!).
ECs require 7.5-12VDC at about 0.3A via a 5.5mm jack.