AirTurn Bluetooth Foot Pedals can be used to change Scenes in Ecamm.
To set this up:
Pair your AirTurn pedals to your Mac following the provided instructions.
Follow the steps in the manual to set the pedals to send Page Up and Page Down. (Note this is may be different than the default setting which will send Up Arrow and Down Arrow.) For our DUO 200 pedals, this was "Mode 3".
You can now use the pedals to move to the next or previous scene in Ecamm.