The Wilson 781001 Public Safety Splitter 380-4000 MHz, 2-Output, Low Insertion Loss is a component of Wilson Electronics' Public Safety DAS / BDA distributed-antenna infrastructure, the fiber-fed system used to carry first-responder and bi-directional amplifier (BDA) radio coverage throughout a large building. It's a system-level part — a hub, remote unit, battery backup enclosure, splitter, or power component — engineered to interoperate with the rest of a Public Safety DAS deployment rather than function on its own.