Two signal working mode:
(1) PWM signal output working mode：red LED indicates PWM signal output, 9 channels
Totally.
(2) SBUS signal output working mode: blue/purple LED indicates SBUS signal output, 10
channels totally. SBUS and PWM signal possible working at the same time with SBUS signal
output working mode. CH9 output SBUS signal, the original CH1 to CH4 output CH7 to CH10
PWM signal at the same time.
