You can however use it with two different triggers: Either with a “double-tap” on the internal foot-switch or with a momentary external foot-switch connected to the right output-jack.
With this mod the right audio-output will be deactivated!
Once a external Trigger is recognized, the internal “double-tap” function will be ignored. Meaning: with the external trigger you are able to use the full spectrum of functions the device offers, without being afraid of changing the relay state.
The double-tap function will be re-enable after a power cycle.