Acura Embedded AcuTab-A - Manual (Page 33)

To prevent the screen or function keys have been touched by
random, you can press the Lock button to halt the system
temporarily; the screen will appear Lock message.
To make the system back to work, press and drag the unlock bar to
the top of the screen, the screen will go to the home screen for your
execution.
Wi-Fi Button
Press this button to set your Wi-Fi function.
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