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.