After accessing the main menu, use the wheel to scroll to the Lock option. Once the
Lock option is highlighted, press the middle part of the wheel to view the options:
No>Yes.
To choose to lock the transmitter, scroll using the wheel to the Yes option. This will
lock the transmitter. The transmitter will then go back to the main menu, with an
unlock symbol to replace the lock symbol.
To unlock the transmitter, scroll to the unlock symbol and use the middle part of the
wheel to select the Yes option.
