Aux Power Control
From MMM Wiki
The Aux Power Control is a simple utility panel that allows user front panel control of the DC power for a cabinet without the MIDI module which, has the power control integrated into the module.
The only way to remove power from the circuits without the power control is to either turn off or unplug the power strip that the external supply is plugged into or, remove the DC power cable feed from the input connector on the back of the cabinet.
The Aux Power Control allows the user to turn the cabinet power on and off from the front panel and has LED indicators to determine the power status for the cabinet.
This module is available.