Route one signal to two outputs or two inputs to one output. Then choose A, B or A & B combined. LED's show you which signal is active. One 9V battery or optional 9V adapter required for LED indication only. Cold-rolled steel housing, quick clip battery door and two-year warranty. Features include: · Route one signal to two outputs or two inputs to one output · Choose A, B or A & B combined · LEDs show you which signal is active · Unit is passive and true bypass and will work without battery (One 9-volt battery is required for LED indication only) · Powers from 9V battery (for LEDs) or optional Morley 9V Adapter · Cold-rolled steel housing, quick clip battery door & two-year warranty