This product ships for FREE in the USA
Connect the dedicated One Control FS-P3 footswitch to the FS P3
jack via the RJ12 cable.
FX LOOP: when the Effects Loop is engaged, the Loop LED is on.
CHANNEL: The LED is green when the RHY channel is selected, and
red when LEAD channel is selected.
TREMOLO: Tremolo LED is on when tremolo is engaged.
FS-P3.pdf
MOVIE