For large, complex X10 installations where it may be necessary to use more than one amplifier, this Amplified Coupler-Repeater can be set to ignore previously amplified and repeated signals and only repeat/amplify original X10 signals. This prevents signal collisions that can reduce signal strength when multiple amplifiers are used. This Amplified Coupler-Repeater has DIP switches that enable the user to customize their operation depending on the application. The beige-painted enclosure is designed to mount on a 4 11/16" x 4 11/16" (double-gang) electrical box. LEDs in the cover indicate programming and operational modes. Incoming signals as weak as 25mV can be detected and repeated on all phases of power.