SE-SWB has Two Way A/B box with True Bypass. Without dividing input or output, this can be used for many kinds of purpose of Switching. Especially High Voltage Mechanical Foot Switch makes you select many kinds of signal lines, even speaker cables. SE-SWB can work without battery, which is for indication LED only. Specs: Power supply: DC9V, Consumption: 4mA, Switch capacity: 125V AV 6A, 30V DC 4A, Dimension: 75.5(w) x 115.5(h) x 47.5(d) (mm), Weight: 260g (include battery)