JHS Pedals Mute Switch Pedal Requires standard 9V DC Negative for the LED to functionMeasures 3.6 x 1.5 x 1 in. Have you ever needed a simple mute switch with no frills? Just hit the footswitch and anything plugged into the input is made 100% silent Has a dual color LED that shines green when signal is hot and red when the mute is on NOTE that this is NOT a momentary switch When clicked, the signal stays in the position chosen