The most effective way to reduce lamp buzz. Use one LDC per dimmer. Most effective when used at or near capacity rating. LDCs may be wired in series with the dimmer on its line side or load side. UL listed and thermally protected. Mounts on 4"x 4"x 1.5" junction box. LDCs make an audible buzz; mount in remote area (e.g., an electrical closet, a basement, or above a drop ceiling). Not for use with electronic low-voltage dimmers or interfaces, reverse phase control products; or with Spacer, Maestro or Spacer System dimmers. Not plenum rated.