FUTABA 12K Instruction Manual page 59

DISPLAY
LCD contrast, back-light brightness and back-
light off-timer adjustment are possible:
Moreover, a display unit can be chosen from the
metric system or yard/pound.
RTN
HOME/EXIT
RETURN
LCD contrast adjustment
*When you want to reset the value to the initial state, push
the RTN button for one second.
Back-light brightness adjustment
*When you want to reset the value to the initial state, push
the RTN button for one second.
<Push Dial>
Back-light off-timer
*When you want to reset the value to the initial state, push
the RTN button for one second.
Unit system adjustment
<Functions of System Menu> 59