Using a PageFlip Pedal
Go into Settings->Network and press the Airtun Setup button. Set it up for BT-105 (If it displays My Device is a PED, then it's set correctly for a BT-105 - pressing My Device is a PED tells the iPad that you want to use a PED). Then set the Pageflip to arrow UP and DOWN (which is the 3rd option on the right of the pedal for the original PageFlip - check your user manual for your specific model).