A

SBUS/PPM input and output interface (auto identification)

B

Working mode indicator (mode 1 bright, mode 2 is blinking)

C

Input signal indicator (bright SBUS input, blinking PPM input)

D

Working mode selection button

E

Channel 3 output interface

F

Channel 1 output interface (L, R is opposite in mode 1, L and R are the same in mode 2)

G

Channel 5，6，7 output interface

H

Channel 8，9，10 output interface

I

Channel 4 output interface (L, R is opposite in mode 1, L and R are the same in mode 2)

J

Channel 2 output interface

K

Power switch interface

L

Power input interface