Using an Airturn Pedal
You can use a Bluetooth Pedal to turn pages wirelessly with unrealBook.
Setup unrealBook for the Airturn Bluetooth Pedal
Choose AirTurn Setup, then turn AirTurn Support ON. If you are using a BT-105/106 or Keyboard Based Pedal, make sure it is paired in the iPad Settings app first. Then based on whether you have a BT-105/106, Coda Technologies STOMP, iRig BlueTurn, PageFlip, follow these instructions.
If you have a PED, PED Pro, BT-200, these are AirDirect pedals. Follow these instructions. Note the port assignment order!
Footswitch is 1,3,2,4 in sequence on the pedalboard in Settings->Network->Airturn Switch Assignments. Use AirDirect mode 1.