Roland EV-1-WL Connection Manual page 81

Changing the Bluetooth ID
Here's how you can specify "1" as the
Bluetooth ID.
1.
Turn off the power of the
AC-22LX to which the BT-DUAL
is connected.
2.
Turn the [AIR FEEL] knob to
"DRY".
3.
Turn on the power of the
AC-22LX while holding down
the BT-DUAL's pairing button.
MEMO
To set the Bluetooth ID to "2", turn
the [AIR FEEL] knob described in
step 2 to "XY".
If the setting was made correctly, the
Bluetooth MIDI DEVICE screen of
AC-22LX Editor indicates
"AC-22LX MIDI_1" from the next
connection.
If, after specifying the number "1" or 2",
you want to return to a state in which
nothing is specified, turn the [AIR FEEL]
knob described in step 2 to "MID SIDE".