With the app "SFR-1 Controller", the sound speedcontroller SFR-1, SFR-1-D and SFR-1-HL can be controlled via Bluetooth. This requires the Bluetooth module BTC-1, which can be ordered in our online shop:https://www.beier-electronic.de/modellbau/produkte/btc-1/btc-1.php With the app, the model can be driven (throttle and steering) and all available functions (additional sounds, WAV player, lights, servos, etc.) of the SFR-1 series can be controlled. Also a parallel operation of a standard RC transmitter and Bluetooth control is possible at the same time. Functions:ā¢ Throttle and steering via position sensor of the Android deviceā¢ Throttle and steering via touch control in the directional padā¢ 20 freely assignable buttonsā¢ 30 freely assignable buttons, if you do not want to drive via the app. Like a graphical multiswitch moduleā¢ Buttons can be labeled arbitrarilyā¢ Buttons with or without memory modeā¢ Volume adjustmentā¢ Model memory for any number of models