FUTABA FASSTest-2.4GHz T18SZ Series Instruction Manual page 21

Slide Lever
LS RS
LS (right), RS (Left):
The Linear Slider LS and RS offer analog input.
*The T18SZ transmitter beeps when the lever comes to the center.
*You can select a slide lever and set the movement direction on the setting screen of mixing functions.
<Before Use>
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