FUTABA T18SZ Instruction Manual page 24

The status of the transmitter is displayed by LED at the upper part of the front of a T18SZ.
24 ＜ Before Use ＞
A Test mode
A T mode
H mode ellow green light
O iolet light
tarting ed light
Trainer tudent
ange check mode
eceiver link mode
Light lue light
reen light
lue light
low blinking
ast blinking
*Example Stick Mode2