Two operating modes output:
(1) PWM signal output working mode：red LED indicates PWM signal output, 6 channels totally.
(2) SBUS signal output working mode: blue/purple LED indicates SBUS&PPM signal output,
CH1 output PPM signal, and CH2 output SBUS signal, CH3 output CH3 PWM signal and CH4 to
CH6 output CH8 to CH10 independent PWM signal simultaneously, 10 channels signal totally.
