Minimum Four channel receiver supported, also PPM and Futaba S-Bus receiver supported.
PPM & S-Bus receivers (the general use of the first 8 channels of S-Bus receiver) to optimize the channel connection, the A, E, T, R, U five-channel functions are set using channel X2, use only one servo cable to connect the PPM or S-Bus to X2, this makes installation quick and easy, not easy to make mistakes.