This device may be wired on the LOAD side of any DHC Switch or Dimming Module (except 6381 or 6383), or on the LINE side of any fixture using an electronic ballast, a low-voltage ballast, or any noise generating source. The 6287 prevents interference generated by fixture components fixture components from interfering with DHC signals. Dimensions of 6287 are 1.578" x 1.850" x 0.75".